Create section properties section

src/file/document/body/section-properties/columns/columns-attributes.ts

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+import { XmlAttributeComponent } from "file/xml-components";
+
+export interface IColumnsAttributes {
+    space?: number;
+}
+
+export class ColumnsAttributes extends XmlAttributeComponent<IColumnsAttributes> {
+    protected xmlKeys = {
+        space: "w:space",
+    };
+}

src/file/document/body/section-properties/columns/columns.ts

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+import { XmlComponent } from "file/xml-components";
+import { ColumnsAttributes } from "./columns-attributes";
+
+export class Columns extends XmlComponent {
+    constructor(space: number) {
+        super("w:cols");
+        this.root.push(
+            new ColumnsAttributes({
+                space: space,
+            }),
+        );
+    }
+}

src/file/document/body/section-properties/doc-grid/doc-grid-attributes.ts

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+import { XmlAttributeComponent } from "file/xml-components";
+
+export interface IDocGridAttributesProperties {
+    linePitch?: number;
+}
+
+export class DocGridAttributes extends XmlAttributeComponent<IDocGridAttributesProperties> {
+    protected xmlKeys = {
+        linePitch: "w:linePitch",
+    };
+}

src/file/document/body/section-properties/doc-grid/doc-grid.ts

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+import { XmlComponent } from "file/xml-components";
+import { DocGridAttributes } from "./doc-grid-attributes";
+
+export class DocumentGrid extends XmlComponent {
+    constructor(linePitch: number) {
+        super("w:docGrid");
+        this.root.push(
+            new DocGridAttributes({
+                linePitch: linePitch,
+            }),
+        );
+    }
+}

src/file/document/body/section-properties/page-margin/page-margin-attributes.ts

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+import { XmlAttributeComponent } from "file/xml-components";
+
+export interface IPageMarginAttributes {
+    top: number;
+    right: number;
+    bottom: number;
+    left: number;
+    header: number;
+    footer: number;
+    gutter: number;
+}
+
+export class PageMarginAttributes extends XmlAttributeComponent<IPageMarginAttributes> {
+    protected xmlKeys = {
+        top: "w:top",
+        right: "w:right",
+        bottom: "w:bottom",
+        left: "w:left",
+        header: "w:header",
+        footer: "w:footer",
+        gutter: "w:gutter",
+    };
+}

src/file/document/body/section-properties/page-margin/page-margin.ts

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+import { XmlComponent } from "file/xml-components";
+import { PageMarginAttributes } from "./page-margin-attributes";
+
+export class PageMargin extends XmlComponent {
+    constructor(top: number, right: number, bottom: number, left: number, header: number, footer: number, gutter: number) {
+        super("w:pgMar");
+        this.root.push(
+            new PageMarginAttributes({
+                top: top,
+                right: right,
+                bottom: bottom,
+                left: left,
+                header: header,
+                footer: footer,
+                gutter: gutter,
+            }),
+        );
+    }
+}

src/file/document/body/section-properties/page-size/page-size-attributes.ts

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+import { XmlAttributeComponent } from "file/xml-components";
+
+export interface IPageSizeAttributes {
+    width: number;
+    height: number;
+}
+
+export class PageSizeAttributes extends XmlAttributeComponent<IPageSizeAttributes> {
+    protected xmlKeys = {
+        width: "w:w",
+        height: "w:h",
+    };
+}

src/file/document/body/section-properties/page-size/page-size.ts

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+import { XmlComponent } from "file/xml-components";
+import { PageSizeAttributes } from "./page-size-attributes";
+
+export class PageSize extends XmlComponent {
+    constructor(width: number, height: number) {
+        super("w:pgSz");
+
+        this.root.push(
+            new PageSizeAttributes({
+                width: width,
+                height: height,
+            }),
+        );
+    }
+}

src/file/document/body/section-properties/section-properties.ts

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+// http://officeopenxml.com/WPsection.php
+import { IColumnsAttributes } from "file/document/body/section-properties/columns/columns-attributes";
+import { IPageMarginAttributes } from "file/document/body/section-properties/page-margin/page-margin-attributes";
+import { IPageSizeAttributes } from "file/document/body/section-properties/page-size/page-size-attributes";
+import { XmlComponent } from "file/xml-components";
+import { Columns } from "./columns/columns";
+import { DocumentGrid } from "./doc-grid/doc-grid";
+import { IDocGridAttributesProperties } from "./doc-grid/doc-grid-attributes";
+import { PageMargin } from "./page-margin/page-margin";
+import { PageSize } from "./page-size/page-size";
+
+export type SectionPropertiesOptions = IPageSizeAttributes & IPageMarginAttributes & IColumnsAttributes & IDocGridAttributesProperties;
+
+export class SectionProperties extends XmlComponent {
+    constructor(options: SectionPropertiesOptions) {
+        super("w:sectPr");
+
+        this.root.push(new PageSize(11906, 16838));
+        this.root.push(new PageMargin(1440, 1440, 1440, 1440, 708, 708, 0));
+        this.root.push(new Columns(708));
+        this.root.push(new DocumentGrid(308));
+    }
+}