A frame is created with the command defframe.... The command frame... is then used to set the parameters of the frame. This will indicate the minimal and maximal values of and and the x-tics and y-tics.
A frame can be drawn on a graphic object with the command setframe... The frame will use a rectangular region of the corresponding window. The defaultlimits of this region are between times and times the size of thedimensions of the windows. This can be changed using the command setclip...
Plots can be done on a graphic object with respect to a frame using the commands graphplot_c... and graphline_c...