15.64.41.1  Example  - 
     TD:SET PATTERN DOT DOT DASH DASH
          or...
     TD:SET PATTERN 0.,.1,0.,.1,.1,.1,.1,.1
is a dot,dot,dash,dash pattern
     TD:SET PATTERN DOT DOT SPACE
          or...
     TD:SET PATTERN 0,.1,0,.15
is an assymmetrical dot,dot pattern.
     TD:SET PATTERN .3,.1,.1,.1
          or... 
     TD:SET PATTERN DAASH DASH
is a long,short dash pattern.
     TD:SET PATTERN -.2,.1
is a dash pattern where the dash varies in length from 0.0 to 0.2
     TD:SET PATTERN RANDOM DOT
          or...
     TD:SET PATTERN 0.0,-0.1
is a randomly spaced dot pattern.
     TD:SET PATTERN RANDOM DOT DASH
          or...
     TD:SET PATTERN 0,-.1,.1,.1
is a random dot,fixed dash pattern.
     TD:SET PATTERN SIZE=.05 DOT DASH
          or...
     TD:SET PATTERN 0,.05,.05,.05
is a small dot dash pattern.