DDFONT displays a font sample on a Datadisc screen.    Each  Datadisc
dot  corresponds  with  an  XGP  dot,  although  the  aspect ratio is
slightly different.  DDFONT asks for a file name, which is  taken  to
be on [XGP,SYS] if there is no such file on your area.

If you  follow  the file  name  with  a semicolon,  then  instead  of
displaying the  entire  font  DDFONT  will  display  whatever  string
follows the semicolon.

Complaints, comments or suggestions to TVR.