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

       tk - paginator for the Tektronix 4014

       tk [ -t ] [ -N ] [ -pL ] [ file ]

       The  output  of  tk  is intended for a Tektronix 4014 terminal.  Tk ar‐
       ranges for 66 lines to fit on the screen, divides  the  screen  into  N
       columns,  and  contributes  an eight space page offset in the (default)
       single-column case.  Tabs, spaces, and  backspaces  are  collected  and
       plotted  when  necessary.  Teletype Model 37 half- and reverse-line se‐
       quences are interpreted and plotted.  At the end of each page tk  waits
       for  a  newline  (empty line) from the keyboard before continuing on to
       the next page.  In this wait state, the command !command will send  the
       command to the shell.

       The command line options are:

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

       -N     Divide the screen into N columns and wait after the last column.

       -pL    Set page length to L lines.