The HELP key has 3 uses within LANSA:

• To display the "second level text" of any message
  Second level text is available for every message and usually describes in more detail the cause or consequence of a message.
• To display information about LANSA itself
  This facility allows access to the LANSA Online Guide or the definition of any field or file in the LANSA data dictionary.
• To display user written HELP text
  This facility displays any HELP text that was provided to LANSA regarding the user defined fields or processes defined under LANSA.