Several of the command-line options can be used to elicit information about the initial state of FWEB.
-@displays information about the control codes. See -AT.
-Ddisplays information about reserved words. See -D_.
-ydisplays default dynamic memory allocations. See -y.
-Zdisplays default values of style-file parameters. See -Z_.
The -h option reminds one about these information options; it
also provides convenient access to the GNU info browser.
See -h.