Hi,
Your own nodes can be created by following the (slightly arcane) numbering convention that is detailed in the note.
I use a spreadsheet that has:
Sheet 1: Counters for the menu structure (headings Object ID, Parent Node, Sequence Number)
Sheet 2: Node details e.g. transactions and descriptions. Could be other nodes like URL, workbooks etc
Sheet 3: Combination of Sheet 1 & 2 with the relevant spacings to generate the input file (you can get these from the example txt file).
The trick is to understand how the counters work for your usage scenario and how you can get the data into the file in a systematic and repeatable way.
Cheers