For a discussion about how the pascal related tags should be organized (as synonymous, for example), please see (pascal) vs (free-pascal) vs (delphi) vs (delphi-xe) vs (object-pascal)
What about a free-pascal tag?
Object Free Pascal (as in Free Pascal compiler), as far as I know, is given by the directive:
The compiler supports Delphi as well, but not completely:
For other Free Pascal modes, please see the documentation.