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

  Expressions consist of operands (numbers, strings,  constants,  variables,
  functions, or array elements) separated by:

   o  Arithmetic operators (+, -, *, /, ^, and **)
   o  String concatenation operator (+)
   o  Relational operators (=, <, >, <= or =>, >= or =>, <> or ><, and ==)
   o  Logical operators (NOT, AND, OR, XOR, EQV, and IMP)

  Additional Information (explode) :

• Truth values
• Channel expression