er methods and properties</p>
            </header>
            <div id="test-editormd">
                <textarea style="display:none;">### Expanded Editor.md

```javascript
var testEditor;

function EditormdExtend() {

    this.extend("methodC", function() {
        console.log("methodC");
    });

    // or
    testEditor.extend("methodA", function() {
        console.log("methodA");
    });

    // one by one setting
    this.set("propertyA", "propertyA");
    this.set("methodE", function() {
        co