◄Compiler Directives► ◄Contents► ◄Index► ◄Back► {$IFDEF <symbol>} <Code Block 1> {$ELSE} <Code Block 2> {$ENDIF} Description Starts an alternative section of code. This directive works with {$IFDEF},{$IFNDEF}, and {$IFOPT}. See also: {$ENDIF}, {$IFDEF}, {$IFNDEF}, {$IFOPT}