term% ls -F
term% pwd
term% cat index.txt
TC(1)                       General Commands Manual                      TC(1)

       tc - photypesetter simulator

       tc [ -t ] [ -sN ] [ -pL ] [ file ]

       Tc  interprets its input (standard input default) as device codes for a
       Graphic Systems phototypesetter (cat).  The standard output  of  tc  is
       intended  for a Tektronix 4015 (a 4014 teminal with ASCII and APL char‐
       acter sets).  The sixteen typesetter sizes are mapped into  the  4014's
       four  sizes;  the  entire TROFF character set is drawn using the 4014's
       character generator, using  overstruck  combinations  where  necessary.
       Typical usage:

                      troff -t file | tc

       At  the  end  of each page tc waits for a newline (empty line) from the
       keyboard before continuing on to the next page.  In  this  wait  state,
       the  command  e will suppress the screen erase before the next page; sN
       will cause the next N pages to be skipped; and !line will send line  to
       the shell.

       The command line options are:

       -t     Don't wait between pages; for directing output into a file.

       -sN    Skip the first N pages.

       -pL    Set  page  length  to  L.   L  may  include  the scale factors p
              (points), i (inches), c (centimeters), and P (picas); default is

       ′-l w′ Multiply  the  default aspect ratio, 1.5, of a displayed page by

       troff(1), plot(1)

       Font distinctions are lost.
       The aspect ratio option is unbelievable.