diff --git a/src/file/paragraph/links/bookmark.ts b/src/file/paragraph/links/bookmark.ts
index addf14530e..261a756864 100644
--- a/src/file/paragraph/links/bookmark.ts
+++ b/src/file/paragraph/links/bookmark.ts
@@ -4,10 +4,6 @@ import * as shortid from "shortid";
 import { TextRun } from "../run";
 import { BookmarkEndAttributes, BookmarkStartAttributes } from "./bookmark-attributes";
 
-export class BookmarkRef {
-    constructor(public readonly name: string, public readonly text: string) {}
-}
-
 export class Bookmark {
     public readonly start: BookmarkStart;
     public readonly text: TextRun;
diff --git a/src/file/paragraph/links/hyperlink.spec.ts b/src/file/paragraph/links/hyperlink.spec.ts
index 93b59e07b6..4b06a933f5 100644
--- a/src/file/paragraph/links/hyperlink.spec.ts
+++ b/src/file/paragraph/links/hyperlink.spec.ts
@@ -3,6 +3,7 @@ import { expect } from "chai";
 import { Formatter } from "export/formatter";
 
 import { Hyperlink } from "./";
+import { HyperlinkRef } from "./hyperlink";
 
 describe("Hyperlink", () => {
     let hyperlink: Hyperlink;
@@ -59,3 +60,11 @@ describe("Hyperlink", () => {
         });
     });
 });
+
+describe("HyperlinkRef", () => {
+    describe("#constructor()", () => {
+        const hyperlinkRef = new HyperlinkRef("test-id");
+
+        expect(hyperlinkRef.id).to.equal("test-id");
+    });
+});
diff --git a/src/file/paragraph/paragraph.ts b/src/file/paragraph/paragraph.ts
index c1a8861568..c97d8d34fd 100644
--- a/src/file/paragraph/paragraph.ts
+++ b/src/file/paragraph/paragraph.ts
@@ -13,7 +13,7 @@ import { ContextualSpacing, ISpacingProperties, Spacing } from "./formatting/spa
 import { HeadingLevel, Style } from "./formatting/style";
 import { LeaderType, TabStop, TabStopPosition, TabStopType } from "./formatting/tab-stop";
 import { NumberProperties } from "./formatting/unordered-list";
-import { Bookmark, BookmarkRef, HyperlinkRef, OutlineLevel } from "./links";
+import { Bookmark, HyperlinkRef, OutlineLevel } from "./links";
 import { ParagraphProperties } from "./properties";
 import { PictureRun, Run, SequentialIdentifier, SymbolRun, TextRun } from "./run";
 
@@ -46,7 +46,7 @@ export interface IParagraphOptions {
         readonly custom?: boolean;
     };
     readonly children?: Array<
-        TextRun | PictureRun | SymbolRun | Bookmark | PageBreak | SequentialIdentifier | FootnoteReferenceRun | HyperlinkRef | BookmarkRef
+        TextRun | PictureRun | SymbolRun | Bookmark | PageBreak | SequentialIdentifier | FootnoteReferenceRun | HyperlinkRef
     >;
 }
 
diff --git a/src/file/paragraph/run/picture-run.ts b/src/file/paragraph/run/picture-run.ts
index c796beebfc..e98dba573a 100644
--- a/src/file/paragraph/run/picture-run.ts
+++ b/src/file/paragraph/run/picture-run.ts
@@ -7,10 +7,6 @@ export class PictureRun extends Run {
     constructor(imageData: IMediaData, drawingOptions?: IDrawingOptions) {
         super({});
 
-        if (imageData === undefined) {
-            throw new Error("imageData cannot be undefined");
-        }
-
         const drawing = new Drawing(imageData, drawingOptions);
 
         this.root.push(drawing);
diff --git a/src/file/paragraph/run/run.spec.ts b/src/file/paragraph/run/run.spec.ts
index 37aadfb8d8..b5febf199e 100644
--- a/src/file/paragraph/run/run.spec.ts
+++ b/src/file/paragraph/run/run.spec.ts
@@ -132,6 +132,30 @@ describe("Run", () => {
         });
     });
 
+    describe("#subScript()", () => {
+        it("it should add subScript to the properties", () => {
+            const run = new Run({
+                subScript: true,
+            });
+            const tree = new Formatter().format(run);
+            expect(tree).to.deep.equal({
+                "w:r": [{ "w:rPr": [{ "w:vertAlign": { _attr: { "w:val": "subscript" } } }] }],
+            });
+        });
+    });
+
+    describe("#superScript()", () => {
+        it("it should add superScript to the properties", () => {
+            const run = new Run({
+                superScript: true,
+            });
+            const tree = new Formatter().format(run);
+            expect(tree).to.deep.equal({
+                "w:r": [{ "w:rPr": [{ "w:vertAlign": { _attr: { "w:val": "superscript" } } }] }],
+            });
+        });
+    });
+
     describe("#highlight()", () => {
         it("it should add highlight to the properties", () => {
             const run = new Run({