Library /sys$common/syshlp/basichelp.hlb LSE Topics, Program header  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  The  program_header  token  is  useful  for  documenting  your  program.
  Placeholders  are  provided  for  listing  the program author and title.
  Compiler directives are available for controlling the listing file.   In
  the  program_header,  you  can  explain program features such as labels,
  supplied inputs, and any side effects.