Interesting function, somehow overlooked. One of the usages I see is to self-document user-defined formats/informats. But there must be a mechanism of adding CATEGORY and DESCRIPTION when user creates them. I don't know anything like that in PROC FORMAT. For user defined formats, this function returns all the fmtinfo values but Category (UNKN) and Description (NO DESC FOUND). Any idea on how to get this info in? Thank you.