IF(<exp>)         Use with caution with commands and statements.

  Clipper Version  1.03 dtd 09/15/90.

  Problem Statement

  IF(<exp>) will be pre-processed as though it was the IF command and
  a compiler error will occur; e.g.,

     SET RELATION TO field + IF(<exp)) ...

  Cause

  Pre-processor action

  Workaround(s)

  1)  Use IIF() instead of IF()
  2)  Make IF() into an expression; e.g., field + (IF(<exp>))