Using and Porting GNU Pascal

Miscellaneous

Headlines: According to Extended Pascal, a Program headline must contain the program's parameters:
```
    Program Foo ( Input, Output );
```
In GNU Pascal, headline parameters are optional. If the headline is omitted, a warning is given.
Case statements: In a case statement, GNU Pascal has otherwise as an alternative to else (according to Extended Pascal):
```
  case x of
    1: writeln ( 'one' );
    2: writeln ( 'two' );
    otherwise: writeln ( 'many' );
  end (* case *);
```
If there are two ore more statements following otherwise, they must be grouped with begin and end.
Char constants: Chars like `#13' or `^M' are not implemented into GNU Pascal.
Sets: GNU Pascal has a card ( myset ) function for sets which counts their elements.
Inline: GNU Pasccal allows "inline" Procedures and Functions, while Borland Pascal only allows machine code to be inline: Borland Pascal:
```
  Function Max ( x, y: Integer ): Integer;
  Inline ( $58 / $59 / $3B / $C1 / $7F / $01 / $91 );
```
GNU Pascal:
```
  Inline Function Max ( x, y: Integer ): Integer;

  begin (* Max *)
    if x > y then
      Max:= x
    else
      Max:= y;
  end (* Max *);
```
(Actually, a more general Max is already built-in.) This feature is not so important as it might seem because in optimization level 3 (see above), GNU Pascal automatically "inlines" short Procedures and Functions.