'''	\"  grap file | pic | troff -mm [-Tdevname] | ...
.PH "'GRAP:  File(\n(.F)''Device(\*(.T)'"
.P
.DS CB
.S 14 18
.G1
.ps 14
.vs 18
frame ht 2.5 wid 2.5
label left "Response" "Variable" left .5
label bot "Factor Variable"
line from 0,0 to 1,1
line dotted from .5,0 to .5,1
define blob X "\v'.2m'\fH\(bu\fP\v'-.2m'" X
blob at 0,.5; blob at .5,.5; blob at 1,.5
.ps
.vs
.G2
.S 10 12
.DE
