Create section properties section

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

@@ -0,0 +1,13 @@
+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,
+            }),
+        );
+    }
+}