The subcommand itself was removed a long time ago.
Thanks to Nolan Void <nolvoa@hanakami.com> for reporting the problem.
(output driver options)
/HEADERS=@{NO,YES,BLANK@}
/LENGTH=@{NONE,@var{n_lines}@}
- /MORE=@{ON,OFF@}
/WIDTH=@{NARROW,WIDTH,@var{n_characters}@}
/TNUMBERS=@{VALUES,LABELS,BOTH@}
/TVARS=@{NAMES,LABELS,BOTH@}
@table @asis
@item HEADERS
@itemx LENGTH
-@itemx MORE
@itemx WIDTH
@itemx TNUMBERS
The @subcmd{TNUMBERS} option sets the way in which values are displayed in output tables.
@cindex headers
@cindex length
-@cindex more
@cindex pager
@cindex width
@cindex tnumbers