IDF wizards documents may be customized using its dual-mode editor:

To type in the IDF script directly see Text mode wizard.
Tree mode wizard presents an interactive schematic view of the IDF script. Its "tree" structure provides an overview which is especially convenient when editing complex documents.
Clicking on an element in Tree mode displays the Properties editor – just choose the options from its lists and EscapeE iconEscapeE writes the IDF script for you.

Links

Composite document wizard

Mail merge wizard

Text mode wizard

Tree mode wizard