This variable provides defaults for all character type parameters. The legal values are
. Its value must only be set via a call to
This is intended mainly for running old 8-bit applications efficiently. If you write for a fat character implementation you should already be aware of these issues, and make some attempt to provide explicit types.
The compiler always behaves as if this variable was bound to
; if you want assumptions about types to be hard-coded into your program, you must supply explicit declarations and type arguments.