diff --git a/src/file/numbering/abstract-numbering.spec.ts b/src/file/numbering/abstract-numbering.spec.ts
index 36173364c0..49eae73577 100644
--- a/src/file/numbering/abstract-numbering.spec.ts
+++ b/src/file/numbering/abstract-numbering.spec.ts
@@ -283,23 +283,41 @@ describe("AbstractNumbering", () => {
         });
 
         describe("formatting methods: run properties", () => {
-            it("#size", () => {
-                const abstractNumbering = new AbstractNumbering(1, [
-                    {
-                        level: 0,
-                        format: "lowerRoman",
-                        text: "%0.",
-                        style: {
-                            run: {
-                                size: 24,
-                                sizeComplexScript: false,
+            const sizeTests = [
+                {
+                    size: 24,
+                    expected: [{ "w:sz": { _attr: { "w:val": 24 } } }, { "w:szCs": { _attr: { "w:val": 24 } } }],
+                },
+                {
+                    size: 24,
+                    sizeComplexScript: true,
+                    expected: [{ "w:sz": { _attr: { "w:val": 24 } } }, { "w:szCs": { _attr: { "w:val": 24 } } }],
+                },
+                {
+                    size: 24,
+                    sizeComplexScript: false,
+                    expected: [{ "w:sz": { _attr: { "w:val": 24 } } }],
+                },
+                {
+                    size: 24,
+                    sizeComplexScript: 26,
+                    expected: [{ "w:sz": { _attr: { "w:val": 24 } } }, { "w:szCs": { _attr: { "w:val": 26 } } }],
+                },
+            ];
+            sizeTests.forEach(({ size, sizeComplexScript, expected }) => {
+                it(`#size ${size} cs ${sizeComplexScript}`, () => {
+                    const abstractNumbering = new AbstractNumbering(1, [
+                        {
+                            level: 0,
+                            format: "lowerRoman",
+                            text: "%0.",
+                            style: {
+                                run: { size, sizeComplexScript },
                             },
                         },
-                    },
-                ]);
-                const tree = new Formatter().format(abstractNumbering);
-                expect(tree["w:abstractNum"][2]["w:lvl"]).to.include({
-                    "w:rPr": [{ "w:sz": { _attr: { "w:val": 24 } } }],
+                    ]);
+                    const tree = new Formatter().format(abstractNumbering);
+                    expect(tree["w:abstractNum"][2]["w:lvl"]).to.include({ "w:rPr": expected });
                 });
             });
 
@@ -479,87 +497,185 @@ describe("AbstractNumbering", () => {
                 });
             });
 
-            it("#bold", () => {
-                const abstractNumbering = new AbstractNumbering(1, [
-                    {
-                        level: 0,
-                        format: "lowerRoman",
-                        text: "%0.",
-                        style: {
-                            run: {
-                                bold: true,
-                                boldComplexScript: false,
+            const boldTests = [
+                {
+                    bold: true,
+                    expected: [{ "w:b": { _attr: { "w:val": true } } }, { "w:bCs": { _attr: { "w:val": true } } }],
+                },
+                {
+                    bold: true,
+                    boldComplexScript: true,
+                    expected: [{ "w:b": { _attr: { "w:val": true } } }, { "w:bCs": { _attr: { "w:val": true } } }],
+                },
+                {
+                    bold: true,
+                    boldComplexScript: false,
+                    expected: [{ "w:b": { _attr: { "w:val": true } } }],
+                },
+            ];
+            boldTests.forEach(({ bold, boldComplexScript, expected }) => {
+                it(`#bold ${bold} cs ${boldComplexScript}`, () => {
+                    const abstractNumbering = new AbstractNumbering(1, [
+                        {
+                            level: 0,
+                            format: "lowerRoman",
+                            text: "%0.",
+                            style: {
+                                run: { bold, boldComplexScript },
                             },
                         },
-                    },
-                ]);
-                const tree = new Formatter().format(abstractNumbering);
-                expect(tree["w:abstractNum"][2]["w:lvl"]).to.include({
-                    "w:rPr": [{ "w:b": { _attr: { "w:val": true } } }],
+                    ]);
+                    const tree = new Formatter().format(abstractNumbering);
+                    expect(tree["w:abstractNum"][2]["w:lvl"]).to.include({ "w:rPr": expected });
                 });
             });
 
-            it("#italics", () => {
-                const abstractNumbering = new AbstractNumbering(1, [
-                    {
-                        level: 0,
-                        format: "lowerRoman",
-                        text: "%0.",
-                        style: {
-                            run: {
-                                italics: true,
-                                italicsComplexScript: false,
+            const italicsTests = [
+                {
+                    italics: true,
+                    expected: [{ "w:i": { _attr: { "w:val": true } } }, { "w:iCs": { _attr: { "w:val": true } } }],
+                },
+                {
+                    italics: true,
+                    italicsComplexScript: true,
+                    expected: [{ "w:i": { _attr: { "w:val": true } } }, { "w:iCs": { _attr: { "w:val": true } } }],
+                },
+                {
+                    italics: true,
+                    italicsComplexScript: false,
+                    expected: [{ "w:i": { _attr: { "w:val": true } } }],
+                },
+            ];
+            italicsTests.forEach(({ italics, italicsComplexScript, expected }) => {
+                it(`#italics ${italics} cs ${italicsComplexScript}`, () => {
+                    const abstractNumbering = new AbstractNumbering(1, [
+                        {
+                            level: 0,
+                            format: "lowerRoman",
+                            text: "%0.",
+                            style: {
+                                run: { italics, italicsComplexScript },
                             },
                         },
-                    },
-                ]);
-                const tree = new Formatter().format(abstractNumbering);
-                expect(tree["w:abstractNum"][2]["w:lvl"]).to.include({
-                    "w:rPr": [{ "w:i": { _attr: { "w:val": true } } }],
+                    ]);
+                    const tree = new Formatter().format(abstractNumbering);
+                    expect(tree["w:abstractNum"][2]["w:lvl"]).to.include({ "w:rPr": expected });
                 });
             });
 
-            it("#highlight", () => {
-                const abstractNumbering = new AbstractNumbering(1, [
-                    {
-                        level: 0,
-                        format: "lowerRoman",
-                        text: "%0.",
-                        style: {
-                            run: {
-                                highlight: "005599",
-                                highlightComplexScript: false,
+            const highlightTests = [
+                {
+                    highlight: "005599",
+                    expected: [{ "w:highlight": { _attr: { "w:val": "005599" } } }, { "w:highlightCs": { _attr: { "w:val": "005599" } } }],
+                },
+                {
+                    highlight: "005599",
+                    highlightComplexScript: true,
+                    expected: [{ "w:highlight": { _attr: { "w:val": "005599" } } }, { "w:highlightCs": { _attr: { "w:val": "005599" } } }],
+                },
+                {
+                    highlight: "005599",
+                    highlightComplexScript: false,
+                    expected: [{ "w:highlight": { _attr: { "w:val": "005599" } } }],
+                },
+                {
+                    highlight: "005599",
+                    highlightComplexScript: "550099",
+                    expected: [{ "w:highlight": { _attr: { "w:val": "005599" } } }, { "w:highlightCs": { _attr: { "w:val": "550099" } } }],
+                },
+            ];
+            highlightTests.forEach(({ highlight, highlightComplexScript, expected }) => {
+                it(`#highlight ${highlight} cs ${highlightComplexScript}`, () => {
+                    const abstractNumbering = new AbstractNumbering(1, [
+                        {
+                            level: 0,
+                            format: "lowerRoman",
+                            text: "%0.",
+                            style: {
+                                run: { highlight, highlightComplexScript },
                             },
                         },
-                    },
-                ]);
-                const tree = new Formatter().format(abstractNumbering);
-                expect(tree["w:abstractNum"][2]["w:lvl"]).to.include({
-                    "w:rPr": [{ "w:highlight": { _attr: { "w:val": "005599" } } }],
+                    ]);
+                    const tree = new Formatter().format(abstractNumbering);
+                    expect(tree["w:abstractNum"][2]["w:lvl"]).to.include({ "w:rPr": expected });
                 });
             });
 
-            it("#shadow", () => {
-                const abstractNumbering = new AbstractNumbering(1, [
-                    {
-                        level: 0,
-                        format: "lowerRoman",
-                        text: "%0.",
-                        style: {
-                            run: {
-                                shadow: {
-                                    type: ShadingType.PERCENT_10,
-                                    fill: "00FFFF",
-                                    color: "FF0000",
-                                },
-                                shadingComplexScript: false,
+            const shadingTests = [
+                {
+                    shadow: {
+                        type: ShadingType.PERCENT_10,
+                        fill: "00FFFF",
+                        color: "FF0000",
+                    },
+                    expected: [
+                        { "w:shd": { _attr: { "w:val": "pct10", "w:fill": "00FFFF", "w:color": "FF0000" } } },
+                        { "w:shdCs": { _attr: { "w:val": "pct10", "w:fill": "00FFFF", "w:color": "FF0000" } } },
+                    ],
+                },
+                {
+                    shading: {
+                        type: ShadingType.PERCENT_10,
+                        fill: "00FFFF",
+                        color: "FF0000",
+                    },
+                    expected: [
+                        { "w:shd": { _attr: { "w:val": "pct10", "w:fill": "00FFFF", "w:color": "FF0000" } } },
+                        { "w:shdCs": { _attr: { "w:val": "pct10", "w:fill": "00FFFF", "w:color": "FF0000" } } },
+                    ],
+                },
+                {
+                    shading: {
+                        type: ShadingType.PERCENT_10,
+                        fill: "00FFFF",
+                        color: "FF0000",
+                    },
+                    shadingComplexScript: true,
+                    expected: [
+                        { "w:shd": { _attr: { "w:val": "pct10", "w:fill": "00FFFF", "w:color": "FF0000" } } },
+                        { "w:shdCs": { _attr: { "w:val": "pct10", "w:fill": "00FFFF", "w:color": "FF0000" } } },
+                    ],
+                },
+                {
+                    shading: {
+                        type: ShadingType.PERCENT_10,
+                        fill: "00FFFF",
+                        color: "FF0000",
+                    },
+                    shadingComplexScript: false,
+                    expected: [{ "w:shd": { _attr: { "w:val": "pct10", "w:fill": "00FFFF", "w:color": "FF0000" } } }],
+                },
+                {
+                    shading: {
+                        type: ShadingType.PERCENT_10,
+                        fill: "00FFFF",
+                        color: "FF0000",
+                    },
+                    shadingComplexScript: {
+                        type: ShadingType.PERCENT_10,
+                        fill: "00FFFF",
+                        color: "00FF00",
+                    },
+                    expected: [
+                        { "w:shd": { _attr: { "w:val": "pct10", "w:fill": "00FFFF", "w:color": "FF0000" } } },
+                        { "w:shdCs": { _attr: { "w:val": "pct10", "w:fill": "00FFFF", "w:color": "00FF00" } } },
+                    ],
+                },
+            ];
+            shadingTests.forEach(({ shadow, shading, shadingComplexScript, expected }) => {
+                it("#shadow correctly", () => {
+                    const abstractNumbering = new AbstractNumbering(1, [
+                        {
+                            level: 0,
+                            format: "lowerRoman",
+                            text: "%0.",
+                            style: {
+                                run: { shadow, shading, shadingComplexScript },
                             },
                         },
-                    },
-                ]);
-                const tree = new Formatter().format(abstractNumbering);
-                expect(tree["w:abstractNum"][2]["w:lvl"]).to.include({
-                    "w:rPr": [{ "w:shd": { _attr: { "w:val": "pct10", "w:fill": "00FFFF", "w:color": "FF0000" } } }],
+                    ]);
+                    const tree = new Formatter().format(abstractNumbering);
+                    expect(tree["w:abstractNum"][2]["w:lvl"]).to.include({ "w:rPr": expected });
                 });
             });
 
diff --git a/src/file/styles/style/character-style.spec.ts b/src/file/styles/style/character-style.spec.ts
index 70d52c802b..2fddce1c1b 100644
--- a/src/file/styles/style/character-style.spec.ts
+++ b/src/file/styles/style/character-style.spec.ts
@@ -334,31 +334,52 @@ describe("CharacterStyle", () => {
     });
 
     describe("formatting methods: run properties", () => {
-        it("#size", () => {
-            const style = new CharacterStyle({
-                id: "myStyleId",
-                run: {
-                    size: 24,
-                },
-            });
-            const tree = new Formatter().format(style);
-            expect(tree).to.deep.equal({
-                "w:style": [
-                    { _attr: { "w:type": "character", "w:styleId": "myStyleId" } },
-                    {
-                        "w:rPr": [{ "w:sz": { _attr: { "w:val": 24 } } }, { "w:szCs": { _attr: { "w:val": 24 } } }],
-                    },
-                    {
-                        "w:uiPriority": {
-                            _attr: {
-                                "w:val": 99,
+        const sizeTests = [
+            {
+                size: 24,
+                expected: [{ "w:sz": { _attr: { "w:val": 24 } } }, { "w:szCs": { _attr: { "w:val": 24 } } }],
+            },
+            {
+                size: 24,
+                sizeComplexScript: true,
+                expected: [{ "w:sz": { _attr: { "w:val": 24 } } }, { "w:szCs": { _attr: { "w:val": 24 } } }],
+            },
+            {
+                size: 24,
+                sizeComplexScript: false,
+                expected: [{ "w:sz": { _attr: { "w:val": 24 } } }],
+            },
+            {
+                size: 24,
+                sizeComplexScript: 26,
+                expected: [{ "w:sz": { _attr: { "w:val": 24 } } }, { "w:szCs": { _attr: { "w:val": 26 } } }],
+            },
+        ];
+        sizeTests.forEach(({ size, sizeComplexScript, expected }) => {
+            it(`#size ${size} cs ${sizeComplexScript}`, () => {
+                const style = new CharacterStyle({
+                    id: "myStyleId",
+                    run: { size, sizeComplexScript },
+                });
+                const tree = new Formatter().format(style);
+                expect(tree).to.deep.equal({
+                    "w:style": [
+                        { _attr: { "w:type": "character", "w:styleId": "myStyleId" } },
+                        {
+                            "w:rPr": expected,
+                        },
+                        {
+                            "w:uiPriority": {
+                                _attr: {
+                                    "w:val": 99,
+                                },
                             },
                         },
-                    },
-                    {
-                        "w:unhideWhenUsed": EMPTY_OBJECT,
-                    },
-                ],
+                        {
+                            "w:unhideWhenUsed": EMPTY_OBJECT,
+                        },
+                    ],
+                });
             });
         });
 
@@ -577,61 +598,91 @@ describe("CharacterStyle", () => {
             });
         });
 
-        it("#bold", () => {
-            const style = new CharacterStyle({
-                id: "myStyleId",
-                run: {
-                    bold: true,
-                    boldComplexScript: false,
-                },
-            });
-            const tree = new Formatter().format(style);
-            expect(tree).to.deep.equal({
-                "w:style": [
-                    { _attr: { "w:type": "character", "w:styleId": "myStyleId" } },
-                    {
-                        "w:rPr": [{ "w:b": { _attr: { "w:val": true } } }],
-                    },
-                    {
-                        "w:uiPriority": {
-                            _attr: {
-                                "w:val": 99,
+        const boldTests = [
+            {
+                bold: true,
+                expected: [{ "w:b": { _attr: { "w:val": true } } }, { "w:bCs": { _attr: { "w:val": true } } }],
+            },
+            {
+                bold: true,
+                boldComplexScript: true,
+                expected: [{ "w:b": { _attr: { "w:val": true } } }, { "w:bCs": { _attr: { "w:val": true } } }],
+            },
+            {
+                bold: true,
+                boldComplexScript: false,
+                expected: [{ "w:b": { _attr: { "w:val": true } } }],
+            },
+        ];
+        boldTests.forEach(({ bold, boldComplexScript, expected }) => {
+            it(`#bold ${bold} cs ${boldComplexScript}`, () => {
+                const style = new CharacterStyle({
+                    id: "myStyleId",
+                    run: { bold, boldComplexScript },
+                });
+                const tree = new Formatter().format(style);
+                expect(tree).to.deep.equal({
+                    "w:style": [
+                        { _attr: { "w:type": "character", "w:styleId": "myStyleId" } },
+                        {
+                            "w:rPr": expected,
+                        },
+                        {
+                            "w:uiPriority": {
+                                _attr: {
+                                    "w:val": 99,
+                                },
                             },
                         },
-                    },
-                    {
-                        "w:unhideWhenUsed": EMPTY_OBJECT,
-                    },
-                ],
+                        {
+                            "w:unhideWhenUsed": EMPTY_OBJECT,
+                        },
+                    ],
+                });
             });
         });
 
-        it("#italics", () => {
-            const style = new CharacterStyle({
-                id: "myStyleId",
-                run: {
-                    italics: true,
-                    italicsComplexScript: false,
-                },
-            });
-            const tree = new Formatter().format(style);
-            expect(tree).to.deep.equal({
-                "w:style": [
-                    { _attr: { "w:type": "character", "w:styleId": "myStyleId" } },
-                    {
-                        "w:rPr": [{ "w:i": { _attr: { "w:val": true } } }],
-                    },
-                    {
-                        "w:uiPriority": {
-                            _attr: {
-                                "w:val": 99,
+        const italicsTests = [
+            {
+                italics: true,
+                expected: [{ "w:i": { _attr: { "w:val": true } } }, { "w:iCs": { _attr: { "w:val": true } } }],
+            },
+            {
+                italics: true,
+                italicsComplexScript: true,
+                expected: [{ "w:i": { _attr: { "w:val": true } } }, { "w:iCs": { _attr: { "w:val": true } } }],
+            },
+            {
+                italics: true,
+                italicsComplexScript: false,
+                expected: [{ "w:i": { _attr: { "w:val": true } } }],
+            },
+        ];
+        italicsTests.forEach(({ italics, italicsComplexScript, expected }) => {
+            it(`#italics ${italics} cs ${italicsComplexScript}`, () => {
+                const style = new CharacterStyle({
+                    id: "myStyleId",
+                    run: { italics, italicsComplexScript },
+                });
+                const tree = new Formatter().format(style);
+                expect(tree).to.deep.equal({
+                    "w:style": [
+                        { _attr: { "w:type": "character", "w:styleId": "myStyleId" } },
+                        {
+                            "w:rPr": expected,
+                        },
+                        {
+                            "w:uiPriority": {
+                                _attr: {
+                                    "w:val": 99,
+                                },
                             },
                         },
-                    },
-                    {
-                        "w:unhideWhenUsed": EMPTY_OBJECT,
-                    },
-                ],
+                        {
+                            "w:unhideWhenUsed": EMPTY_OBJECT,
+                        },
+                    ],
+                });
             });
         });
 
@@ -675,75 +726,141 @@ describe("CharacterStyle", () => {
             });
         });
 
-        it("#highlight", () => {
-            const style = new CharacterStyle({
-                id: "myStyleId",
-                run: {
-                    highlight: "005599",
-                    highlightComplexScript: false,
-                },
-            });
-            const tree = new Formatter().format(style);
-            expect(tree).to.deep.equal({
-                "w:style": [
-                    { _attr: { "w:type": "character", "w:styleId": "myStyleId" } },
-                    {
-                        "w:rPr": [{ "w:highlight": { _attr: { "w:val": "005599" } } }],
-                    },
-                    {
-                        "w:uiPriority": {
-                            _attr: {
-                                "w:val": 99,
+        const highlightTests = [
+            {
+                highlight: "005599",
+                expected: [{ "w:highlight": { _attr: { "w:val": "005599" } } }, { "w:highlightCs": { _attr: { "w:val": "005599" } } }],
+            },
+            {
+                highlight: "005599",
+                highlightComplexScript: true,
+                expected: [{ "w:highlight": { _attr: { "w:val": "005599" } } }, { "w:highlightCs": { _attr: { "w:val": "005599" } } }],
+            },
+            {
+                highlight: "005599",
+                highlightComplexScript: false,
+                expected: [{ "w:highlight": { _attr: { "w:val": "005599" } } }],
+            },
+            {
+                highlight: "005599",
+                highlightComplexScript: "550099",
+                expected: [{ "w:highlight": { _attr: { "w:val": "005599" } } }, { "w:highlightCs": { _attr: { "w:val": "550099" } } }],
+            },
+        ];
+        highlightTests.forEach(({ highlight, highlightComplexScript, expected }) => {
+            it(`#highlight ${highlight} cs ${highlightComplexScript}`, () => {
+                const style = new CharacterStyle({
+                    id: "myStyleId",
+                    run: { highlight, highlightComplexScript },
+                });
+                const tree = new Formatter().format(style);
+                expect(tree).to.deep.equal({
+                    "w:style": [
+                        { _attr: { "w:type": "character", "w:styleId": "myStyleId" } },
+                        {
+                            "w:rPr": expected,
+                        },
+                        {
+                            "w:uiPriority": {
+                                _attr: {
+                                    "w:val": 99,
+                                },
                             },
                         },
-                    },
-                    {
-                        "w:unhideWhenUsed": EMPTY_OBJECT,
-                    },
-                ],
+                        {
+                            "w:unhideWhenUsed": EMPTY_OBJECT,
+                        },
+                    ],
+                });
             });
         });
 
-        it("#shadow", () => {
-            const style = new CharacterStyle({
-                id: "myStyleId",
-                run: {
-                    shadow: {
-                        type: ShadingType.PERCENT_10,
-                        fill: "00FFFF",
-                        color: "FF0000",
-                    },
-                    shadingComplexScript: false,
+        const shadingTests = [
+            {
+                shadow: {
+                    type: ShadingType.PERCENT_10,
+                    fill: "00FFFF",
+                    color: "FF0000",
                 },
-            });
-            const tree = new Formatter().format(style);
-            expect(tree).to.deep.equal({
-                "w:style": [
-                    { _attr: { "w:type": "character", "w:styleId": "myStyleId" } },
-                    {
-                        "w:rPr": [
-                            {
-                                "w:shd": {
-                                    _attr: {
-                                        "w:val": "pct10",
-                                        "w:fill": "00FFFF",
-                                        "w:color": "FF0000",
-                                    },
+                expected: [
+                    { "w:shd": { _attr: { "w:val": "pct10", "w:fill": "00FFFF", "w:color": "FF0000" } } },
+                    { "w:shdCs": { _attr: { "w:val": "pct10", "w:fill": "00FFFF", "w:color": "FF0000" } } },
+                ],
+            },
+            {
+                shading: {
+                    type: ShadingType.PERCENT_10,
+                    fill: "00FFFF",
+                    color: "FF0000",
+                },
+                expected: [
+                    { "w:shd": { _attr: { "w:val": "pct10", "w:fill": "00FFFF", "w:color": "FF0000" } } },
+                    { "w:shdCs": { _attr: { "w:val": "pct10", "w:fill": "00FFFF", "w:color": "FF0000" } } },
+                ],
+            },
+            {
+                shading: {
+                    type: ShadingType.PERCENT_10,
+                    fill: "00FFFF",
+                    color: "FF0000",
+                },
+                shadingComplexScript: true,
+                expected: [
+                    { "w:shd": { _attr: { "w:val": "pct10", "w:fill": "00FFFF", "w:color": "FF0000" } } },
+                    { "w:shdCs": { _attr: { "w:val": "pct10", "w:fill": "00FFFF", "w:color": "FF0000" } } },
+                ],
+            },
+            {
+                shading: {
+                    type: ShadingType.PERCENT_10,
+                    fill: "00FFFF",
+                    color: "FF0000",
+                },
+                shadingComplexScript: false,
+                expected: [{ "w:shd": { _attr: { "w:val": "pct10", "w:fill": "00FFFF", "w:color": "FF0000" } } }],
+            },
+            {
+                shading: {
+                    type: ShadingType.PERCENT_10,
+                    fill: "00FFFF",
+                    color: "FF0000",
+                },
+                shadingComplexScript: {
+                    type: ShadingType.PERCENT_10,
+                    fill: "00FFFF",
+                    color: "00FF00",
+                },
+                expected: [
+                    { "w:shd": { _attr: { "w:val": "pct10", "w:fill": "00FFFF", "w:color": "FF0000" } } },
+                    { "w:shdCs": { _attr: { "w:val": "pct10", "w:fill": "00FFFF", "w:color": "00FF00" } } },
+                ],
+            },
+        ];
+        shadingTests.forEach(({ shadow, shading, shadingComplexScript, expected }) => {
+            it("#shadow correctly", () => {
+                const style = new CharacterStyle({
+                    id: "myStyleId",
+                    run: { shadow, shading, shadingComplexScript },
+                });
+                const tree = new Formatter().format(style);
+                expect(tree).to.deep.equal({
+                    "w:style": [
+                        { _attr: { "w:type": "character", "w:styleId": "myStyleId" } },
+                        {
+                            "w:rPr": expected,
+                        },
+                        {
+                            "w:uiPriority": {
+                                _attr: {
+                                    "w:val": 99,
                                 },
                             },
-                        ],
-                    },
-                    {
-                        "w:uiPriority": {
-                            _attr: {
-                                "w:val": 99,
-                            },
                         },
-                    },
-                    {
-                        "w:unhideWhenUsed": EMPTY_OBJECT,
-                    },
-                ],
+                        {
+                            "w:unhideWhenUsed": EMPTY_OBJECT,
+                        },
+                    ],
+                });
             });
         });
     });
diff --git a/src/file/styles/style/paragraph-style.spec.ts b/src/file/styles/style/paragraph-style.spec.ts
index 79e4f20cc7..92b798f862 100644
--- a/src/file/styles/style/paragraph-style.spec.ts
+++ b/src/file/styles/style/paragraph-style.spec.ts
@@ -358,21 +358,37 @@ describe("ParagraphStyle", () => {
     });
 
     describe("formatting methods: run properties", () => {
-        it("#size", () => {
-            const style = new ParagraphStyle({
-                id: "myStyleId",
-                run: {
-                    size: 24,
-                },
-            });
-            const tree = new Formatter().format(style);
-            expect(tree).to.deep.equal({
-                "w:style": [
-                    { _attr: { "w:type": "paragraph", "w:styleId": "myStyleId" } },
-                    {
-                        "w:rPr": [{ "w:sz": { _attr: { "w:val": 24 } } }, { "w:szCs": { _attr: { "w:val": 24 } } }],
-                    },
-                ],
+        const sizeTests = [
+            {
+                size: 24,
+                expected: [{ "w:sz": { _attr: { "w:val": 24 } } }, { "w:szCs": { _attr: { "w:val": 24 } } }],
+            },
+            {
+                size: 24,
+                sizeComplexScript: true,
+                expected: [{ "w:sz": { _attr: { "w:val": 24 } } }, { "w:szCs": { _attr: { "w:val": 24 } } }],
+            },
+            {
+                size: 24,
+                sizeComplexScript: false,
+                expected: [{ "w:sz": { _attr: { "w:val": 24 } } }],
+            },
+            {
+                size: 24,
+                sizeComplexScript: 26,
+                expected: [{ "w:sz": { _attr: { "w:val": 24 } } }, { "w:szCs": { _attr: { "w:val": 26 } } }],
+            },
+        ];
+        sizeTests.forEach(({ size, sizeComplexScript, expected }) => {
+            it(`#size ${size} cs ${sizeComplexScript}`, () => {
+                const style = new ParagraphStyle({
+                    id: "myStyleId",
+                    run: { size, sizeComplexScript },
+                });
+                const tree = new Formatter().format(style);
+                expect(tree).to.deep.equal({
+                    "w:style": [{ _attr: { "w:type": "paragraph", "w:styleId": "myStyleId" } }, { "w:rPr": expected }],
+                });
             });
         });
 
@@ -543,93 +559,169 @@ describe("ParagraphStyle", () => {
             });
         });
 
-        it("#bold", () => {
-            const style = new ParagraphStyle({
-                id: "myStyleId",
-                run: {
-                    bold: true,
-                    boldComplexScript: false,
-                },
-            });
-            const tree = new Formatter().format(style);
-            expect(tree).to.deep.equal({
-                "w:style": [
-                    { _attr: { "w:type": "paragraph", "w:styleId": "myStyleId" } },
-                    {
-                        "w:rPr": [{ "w:b": { _attr: { "w:val": true } } }],
-                    },
-                ],
+        const boldTests = [
+            {
+                bold: true,
+                expected: [{ "w:b": { _attr: { "w:val": true } } }, { "w:bCs": { _attr: { "w:val": true } } }],
+            },
+            {
+                bold: true,
+                boldComplexScript: true,
+                expected: [{ "w:b": { _attr: { "w:val": true } } }, { "w:bCs": { _attr: { "w:val": true } } }],
+            },
+            {
+                bold: true,
+                boldComplexScript: false,
+                expected: [{ "w:b": { _attr: { "w:val": true } } }],
+            },
+        ];
+        boldTests.forEach(({ bold, boldComplexScript, expected }) => {
+            it(`#bold ${bold} cs ${boldComplexScript}`, () => {
+                const style = new ParagraphStyle({
+                    id: "myStyleId",
+                    run: { bold, boldComplexScript },
+                });
+                const tree = new Formatter().format(style);
+                expect(tree).to.deep.equal({
+                    "w:style": [{ _attr: { "w:type": "paragraph", "w:styleId": "myStyleId" } }, { "w:rPr": expected }],
+                });
             });
         });
 
-        it("#italics", () => {
-            const style = new ParagraphStyle({
-                id: "myStyleId",
-                run: {
-                    italics: true,
-                    italicsComplexScript: false,
-                },
-            });
-            const tree = new Formatter().format(style);
-            expect(tree).to.deep.equal({
-                "w:style": [
-                    { _attr: { "w:type": "paragraph", "w:styleId": "myStyleId" } },
-                    {
-                        "w:rPr": [{ "w:i": { _attr: { "w:val": true } } }],
-                    },
-                ],
+        const italicsTests = [
+            {
+                italics: true,
+                expected: [{ "w:i": { _attr: { "w:val": true } } }, { "w:iCs": { _attr: { "w:val": true } } }],
+            },
+            {
+                italics: true,
+                italicsComplexScript: true,
+                expected: [{ "w:i": { _attr: { "w:val": true } } }, { "w:iCs": { _attr: { "w:val": true } } }],
+            },
+            {
+                italics: true,
+                italicsComplexScript: false,
+                expected: [{ "w:i": { _attr: { "w:val": true } } }],
+            },
+        ];
+        italicsTests.forEach(({ italics, italicsComplexScript, expected }) => {
+            it(`#italics ${italics} cs ${italicsComplexScript}`, () => {
+                const style = new ParagraphStyle({
+                    id: "myStyleId",
+                    run: { italics, italicsComplexScript },
+                });
+                const tree = new Formatter().format(style);
+                expect(tree).to.deep.equal({
+                    "w:style": [{ _attr: { "w:type": "paragraph", "w:styleId": "myStyleId" } }, { "w:rPr": expected }],
+                });
             });
         });
 
-        it("#highlight", () => {
-            const style = new ParagraphStyle({
-                id: "myStyleId",
-                run: {
-                    highlight: "005599",
-                    highlightComplexScript: false,
-                },
-            });
-            const tree = new Formatter().format(style);
-            expect(tree).to.deep.equal({
-                "w:style": [
-                    { _attr: { "w:type": "paragraph", "w:styleId": "myStyleId" } },
-                    {
-                        "w:rPr": [{ "w:highlight": { _attr: { "w:val": "005599" } } }],
-                    },
-                ],
+        const highlightTests = [
+            {
+                highlight: "005599",
+                expected: [{ "w:highlight": { _attr: { "w:val": "005599" } } }, { "w:highlightCs": { _attr: { "w:val": "005599" } } }],
+            },
+            {
+                highlight: "005599",
+                highlightComplexScript: true,
+                expected: [{ "w:highlight": { _attr: { "w:val": "005599" } } }, { "w:highlightCs": { _attr: { "w:val": "005599" } } }],
+            },
+            {
+                highlight: "005599",
+                highlightComplexScript: false,
+                expected: [{ "w:highlight": { _attr: { "w:val": "005599" } } }],
+            },
+            {
+                highlight: "005599",
+                highlightComplexScript: "550099",
+                expected: [{ "w:highlight": { _attr: { "w:val": "005599" } } }, { "w:highlightCs": { _attr: { "w:val": "550099" } } }],
+            },
+        ];
+        highlightTests.forEach(({ highlight, highlightComplexScript, expected }) => {
+            it(`#highlight ${highlight} cs ${highlightComplexScript}`, () => {
+                const style = new ParagraphStyle({
+                    id: "myStyleId",
+                    run: { highlight, highlightComplexScript },
+                });
+                const tree = new Formatter().format(style);
+                expect(tree).to.deep.equal({
+                    "w:style": [{ _attr: { "w:type": "paragraph", "w:styleId": "myStyleId" } }, { "w:rPr": expected }],
+                });
             });
         });
 
-        it("#shadow", () => {
-            const style = new ParagraphStyle({
-                id: "myStyleId",
-                run: {
-                    shadow: {
-                        type: ShadingType.PERCENT_10,
-                        fill: "00FFFF",
-                        color: "FF0000",
-                    },
-                    shadingComplexScript: false,
+        const shadingTests = [
+            {
+                shadow: {
+                    type: ShadingType.PERCENT_10,
+                    fill: "00FFFF",
+                    color: "FF0000",
                 },
-            });
-            const tree = new Formatter().format(style);
-            expect(tree).to.deep.equal({
-                "w:style": [
-                    { _attr: { "w:type": "paragraph", "w:styleId": "myStyleId" } },
-                    {
-                        "w:rPr": [
-                            {
-                                "w:shd": {
-                                    _attr: {
-                                        "w:val": "pct10",
-                                        "w:fill": "00FFFF",
-                                        "w:color": "FF0000",
-                                    },
-                                },
-                            },
-                        ],
-                    },
+                expected: [
+                    { "w:shd": { _attr: { "w:val": "pct10", "w:fill": "00FFFF", "w:color": "FF0000" } } },
+                    { "w:shdCs": { _attr: { "w:val": "pct10", "w:fill": "00FFFF", "w:color": "FF0000" } } },
                 ],
+            },
+            {
+                shading: {
+                    type: ShadingType.PERCENT_10,
+                    fill: "00FFFF",
+                    color: "FF0000",
+                },
+                expected: [
+                    { "w:shd": { _attr: { "w:val": "pct10", "w:fill": "00FFFF", "w:color": "FF0000" } } },
+                    { "w:shdCs": { _attr: { "w:val": "pct10", "w:fill": "00FFFF", "w:color": "FF0000" } } },
+                ],
+            },
+            {
+                shading: {
+                    type: ShadingType.PERCENT_10,
+                    fill: "00FFFF",
+                    color: "FF0000",
+                },
+                shadingComplexScript: true,
+                expected: [
+                    { "w:shd": { _attr: { "w:val": "pct10", "w:fill": "00FFFF", "w:color": "FF0000" } } },
+                    { "w:shdCs": { _attr: { "w:val": "pct10", "w:fill": "00FFFF", "w:color": "FF0000" } } },
+                ],
+            },
+            {
+                shading: {
+                    type: ShadingType.PERCENT_10,
+                    fill: "00FFFF",
+                    color: "FF0000",
+                },
+                shadingComplexScript: false,
+                expected: [{ "w:shd": { _attr: { "w:val": "pct10", "w:fill": "00FFFF", "w:color": "FF0000" } } }],
+            },
+            {
+                shading: {
+                    type: ShadingType.PERCENT_10,
+                    fill: "00FFFF",
+                    color: "FF0000",
+                },
+                shadingComplexScript: {
+                    type: ShadingType.PERCENT_10,
+                    fill: "00FFFF",
+                    color: "00FF00",
+                },
+                expected: [
+                    { "w:shd": { _attr: { "w:val": "pct10", "w:fill": "00FFFF", "w:color": "FF0000" } } },
+                    { "w:shdCs": { _attr: { "w:val": "pct10", "w:fill": "00FFFF", "w:color": "00FF00" } } },
+                ],
+            },
+        ];
+        shadingTests.forEach(({ shadow, shading, shadingComplexScript, expected }) => {
+            it("#shadow correctly", () => {
+                const style = new ParagraphStyle({
+                    id: "myStyleId",
+                    run: { shadow, shading, shadingComplexScript },
+                });
+                const tree = new Formatter().format(style);
+                expect(tree).to.deep.equal({
+                    "w:style": [{ _attr: { "w:type": "paragraph", "w:styleId": "myStyleId" } }, { "w:rPr": expected }],
+                });
             });
         });