Library /sys$common/syshlp/decset$envmgr.hlb cgui, gen options PopForm, compiler switches TxtF  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 Enter any compilation switches that should be added to every compile command
 in the generated description file. These must be exactly what would be added
 to the command; i. e. they should include the slash (/) character. No checking
 is done to ensure the proper command