XL Fortran Enterprise Edition for AIX : User's Guide - IBM

Detailed Descriptions of the XL Fortran Compiler Options
The following alphabetical list of options provides all the information you should
need to use each option effectively.
How to read the syntax information:
v
v
v
v
v
v
Syntax is shown first in command-line form, and then in @PROCESS form if
applicable.
Defaults for each option are underlined and in boldface type.
Individual required arguments are shown with no special notation.
When you must make a choice between a set of alternatives, they are enclosed
by { and } symbols.
Optional arguments are enclosed by [ and ] symbols.
When you can select from a group of choices, they are separated by | characters.
v Arguments that you can repeat are followed by ellipses (...).
90 XL Fortran Enterprise Edition for AIX : User’s Guide