2.1.1 Predened symbols

The Free Pascal compiler denes some symbols before starting to compile your program or unit. You can use these symbols to dierentiate between dierent versions of the compiler, and between dierent compilers. To get all the possible denes when starting compilation, see appendix G

Remark:Symbols, even when they're dened in the interface part of a unit, are not available outside that unit.