type MedInt { built-in type }
MedInt is a signed integer type which is not smaller than Integer. On some platforms it actually is the same as Integer and 32 bits wide and thus has a range of -2147483648 .. 2147483647.
MedInt in GNU Pascal is compatible to long int in GNU C. This compatibility is the reason why MedInt exists.
There are lots of other integer types in GPC, see Integer Types.
MedInt is a GNU Pascal extension.
program MedIntDemo; var a: MedInt; begin a := 42; WriteLn (a) end.