EscapeE "wizards" take composite documents to a whole new level. They can also generate task-specific documents, such as mail-merge letters. The output is fully-fledged professional documents, but you are not limited to a one-size-fits-all solution. The underlying code is in IDF so if you want to add your own special touches, you can.
Mail-merge wizard handles "mail shots" – customized letters to individuals whose details are provided by a data-file.
The Composite document wizard gives you a choice of layouts for you to output content as lists, columns, booklets etc.. You may even separate a full music score into its individual parts! The wizard takes care of any scaling, rotation and splicing issues automatically.
To output non-standard documents, use the IDF dual-mode editor. In 'Tree' mode, the document is shown schematically: clicking on an element displays its properties, which you may alter by choosing from drop-down lists, dialogs or edit-boxes. You can see the code generated by EscapeE by switching to 'Text' mode. If you're familiar with xml elements and attributes you may, of course, edit the code in this window from the keyboard. See Other documents.
Links
About composite documents and IDF