File
Insert an HTML or Template Code file from your website's web files — useful for reusable page structure like a base template, header, or footer.

While editing a page, find the vertical icon rail on the left edge of the page canvas. File is the third icon from the top.
Drag it onto an empty region of the canvas. This opens Select File.

Note:
When dragging elements into the content area, make sure the Dynamic Div where you want to place the element is selected. The selected Dynamic Div will be highlighted in light blue.