TERMINAL

          VT100 | VT52 >
         <WIDTH number>

 In order to better  support command recognition  and in-line help,  the
 parsing  package  can  take   advantage  of  terminal  cursor   editing
 capabilities if  it knows  what kind  of  a terminal  is in  use.   The
 default is  a dumb  terminal,  one of  the  equivalent types  GLASS  or
 HARDCOPY, which has no cursor editing capabilities whatever.  The other
 five types (and  more can easily  be added) represent  common types  of
 terminals from many different manufacturers.  For neat output  display,
 the parsing package also needs to know the terminal output width, which
 can be defined by the WIDTH option.   It defaults to 72 columns if  not
 specified.  If  no options  are specified,  the TERMINAL  command  will
 display the current terminal type and width.  When the operating system
 can provide this information,  as is the case  on the DEC-20, then  the
 terminal type and width will be automatically obtained at the beginning
 of each command line, so that if the job is moved from one terminal  to
 another, terminal handling will continue to be correct, and it will not
 be necessary to issue this command.