LGI Routines, LGI$ICB_USERPROMPT, Description
*Conan The Librarian
Use this callback routine to interactively prompt for the user name on a character-cell terminal. The callback routine reads the response to the prompt and does standard DCL parsing for the user name and any qualifiers provided. Upon completion of this routine, the user name is accessible at the LGI$A_USERNAME entry in the standard arguments vector.