Library /sys$common/syshlp/sda.hlb DEFINE  *Conan The Librarian (sorry for the slow response - running on an old VAX)

     DEFINE  symbol[=]expression [/qualifier...]

     Assigns a value of an expression to a symbol.  The symbol can be used
     in expressions.  Each subsequent definition of the same symbol overrides
     any previous definitions.  The symbol remains defined until you exit
     from SDA.

  Additional Information (explode) :

• /KEY
• /SET_STATE
• /[NO]TERMINATE