Overlay - draws simple overlays
Overlay < in.H > out.V [pars]
Draws polylines, text, boxes, and oval overlays
Options let you position objects, control the size of the labeling, etc. The objects can be overlayed onto vplot graphics files using the 'erase=once' option of pen filters. For example, 'Tube < Wiggleout.H Boxout.H erase=once' The interact option of pen filters can be used to determine the coordinate of the spot the box's pointer is to point at. (Alas, not all pen filters support the 'interact' capability.) The special pen filter Vppen can be used to combine vplot files.
Must be 'box','oval','arrow','polyline', or 'text'
[0] Fatness of object
[7] Color of object
[0] Relative Position of left edge of box
[0] Relative Position of bottom edge of box
[1.] Width of box
[1.] Height of box
[0,0] Center of oval x
[1.,1.] Major axes for oval
[0,0][1.,1.] Array of points to draw lines between (max 50)
[1.] scale factor for width of pointer
[0.,0.] Location of text
[.25] Height of text, in inches
' ' Text string for label
[0] Angle for text
[1] Whether (1) or not (0) to create a box arround text
LOCAL
sep_graphics