picture on [(h1,v1)][-(h2,v2)] picture off [,pictHandleVar&]
picture on statement initiates "picture recording" for the
current output window. The picture off statement turns off
picture recording. while picture recording is on, all drawing
commands and text-display commands which are sent to the window
are "recorded" in a special data structure called a picture. The
internal format of a picture is identical to that of a resource
of type " PICT". After picture recording is turned off, you can
display or print the picture, or attach it to a picture field,
or save it to disk (as a " PICT" resource or a " Every picture
has a frame, an imaginary rectangle which is stored as part of
the picture's data structure. Usually, but not always, the
picture itself is contained within the frame. The frame is used
as a reference to determine how the picture should be scaled and
positioned when the picture is later displayed or printed. The
picture recording is cropped to the recording window's clip
region, which may or may n