Release 10.1A: OpenEdge Development:
ADM Reference

showMessage

Displays, using a simple MESSAGE statement by default, either a literal message string or the return value from a call to messageNumber.

Location: smart.p

Parameters:

INPUT pcMessage AS CHARACTER

A message string, which might be a message number in string form

Returns: LOGICAL

Notes: This function can be overridden to use a mechanism other than the MESSAGE statement to display messages, and still use the messageNumber function to map message numbers to translatable text. Note that this is different from addMessage, fetchMessages, etc., which log messages in a temp-table for later retrieval.