gslp -version (return code: 0)
Usage: /usr/bin/gslp [-12BclqRr] [-b<header>] [-f<font>] [-F<hfont>]
[-L<lines>] [-p<outfile>] [-T<tabwidth>]
[--add-to-(space|width) <units>] [--columns <n>]
[--detect] [--first-page <page#>] [--last-page <page#>]
[--(heading|footing)-(left|right|center) <string>]
[--kern <afmfile>] [--margin-(top|bottom|left|right) <inches>]
[--no-eject-(file|formfeed)] [--spacing <n>] file1 ... filen
gslp -h (return code: 0)
Usage: /usr/bin/gslp [-12BclqRr] [-b<header>] [-f<font>] [-F<hfont>]
[-L<lines>] [-p<outfile>] [-T<tabwidth>]
[--add-to-(space|width) <units>] [--columns <n>]
[--detect] [--first-page <page#>] [--last-page <page#>]
[--(heading|footing)-(left|right|center) <string>]
[--kern <afmfile>] [--margin-(top|bottom|left|right) <inches>]
[--no-eject-(file|formfeed)] [--spacing <n>] file1 ... filen