7.1 Free Pascal compiler modes
 7.2 Turbo Pascal
  7.2.1 Things that will not work
  7.2.2 Things which are extra
  7.2.3 Turbo Pascal compatibility mode
  7.2.4 A note on long file names under dos
 7.3 Porting Delphi code
  7.3.1 Missing language constructs
  7.3.2 Missing calls / API incompatibilities
  7.3.3 Delphi compatibility mode
  7.3.4 Best practices for porting
 7.4 Writing portable code