Multiple columns in a section

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

@@ -2,10 +2,12 @@ import { XmlAttributeComponent } from "file/xml-components";
 
 export interface IColumnsAttributes {
     readonly space?: number;
+    readonly num?: number;
 }
 
 export class ColumnsAttributes extends XmlAttributeComponent<IColumnsAttributes> {
     protected readonly xmlKeys = {
         space: "w:space",
+        num: "w:num",
     };
 }