Arbortext Command Language > Functions by Alphabetical Listing > doc_valid
doc_valid
doc_valid (doc)
This function returns 1 (True) if doc is a valid document identifier, otherwise it returns 0.
doc_valid(0) is always a valid document and is the same as doc_valid(current_doc()).
Parent topic 
Functions by Alphabetical Listing
這是否有幫助?