idlwave-doc-modifications-keyword

idlwave-doc-modifications-keyword is a variable defined in `idlwave.el'.
Its value is

"HISTORY"

Documentation:
The modifications keyword to use with the log documentation commands.
A ':' is added to the keyword end.
Inserted by doc-header and used to position logs by doc-modification.
If nil it will not be inserted.

You can customize this variable.