Using predefined functions

SDF-P recognizes a function by the parentheses that follow the function name. The parentheses are optional if the function call does not contain any input parameters. When the parentheses are left out, SDF-P interprets the function name as a variable first (see section“Function call”). Using parentheses not only avoids this confusion, but it also yields better performance since SDF-P does not have to search for a variable first.

Recommended syntax	Syntax with lower performance
/WRITE-TEXT 'It is now: &(TIME())'	/WRITE-TEXT 'It is now: &(TIME)'