HP Fortran Programmer's Guide (B3908-90031; September 2011)

Using Fortran directives
Directive syntax
Chapter 9 207
Directive syntax
The syntax for specifying directives in HP Fortran source files varies according to the type of directive:
C preprocessor directives take the form:
#[line]cpp-directive
where cpp-directive is ANSI C-conforming except that the line keyword is
optional, making it compatible with the HP C compiler.
HP Fortran compiler directives take the form:
comment-character $HP$ directive-name
where comment-character is ! in free-source format or C, !, or * in fixed-source
format; and directive-name is one of the directives described in this chapter.
There must be no space between comment-character and $HP$. In fixed-source
format, comment-character must be in column 1.