1 DEF
 The DEF statement lets you define a single- or multi-line function.

 Examples

 DEF DOUBLE Add (DOUBLE A,B, SINGLE C,D,E) = A+B+C+D+E
 DEF DOUBLE Example (DOUBLE A,B, SINGLE C,D,E)
 EXIT DEF IF B = 0
 Example = (A/B) + (C-D)^E
 END DEF

2 Syntax

 Single-Line DEF:

     DEF [data-type] def-name [([[data-type] unsubs-var-name],...)]=exp

 Multi-Line DEF:

     DEF [data-type] def-name [([[data-type] unsubs-var-name],...)]

         [statement]...

     { END DEF }
     { FNEND   }