HP 3000 Manuals

HP FORTRAN 77/iX Reference

UPPERCASE Directive 

The UPPERCASE directive turns on or off shifting to upper case of all
FORTRAN external names.  This directive does not affect the external name
of the ALIAS and EXTERNAL_ALIAS directives or intrinsic names if
$LITERAL_ALIAS ON has been specified.  See "ALIAS Directive"  and
"LITERAL_ALIAS Directive" .

Specifying $LOWERCASE ON (or $LOWERCASE) is equivalent to specifying
$UPPERCASE OFF.
Specifying $LOWERCASE OFF is equivalent to specifying $UPPERCASE ON (or
$UPPERCASE).

Syntax 

$UPPERCASE [ON ]
           [OFF]

Default               Off; external names are not shifted to upper case.

Location              The UPPERCASE directive can appear anywhere within
                      the program unit.

Toggling/ Duration    The UPPERCASE directive remains in effect until
                      either a LOWERCASE or another UPPERCASE directive
                      is encountered.

If the UPPERCASE directive is toggled within a program unit, the point of
declaration (or the point of first use if implicitly declared) determines
the case of external names.

MPE/iX 5.0 Documentation