2.3.3 grfig

1.
Function
Performs the necessary initialization for drawing a new figure.
2.
Call
call grfig
3.
Explanation of Parameters
None.
4.
Notes
(a)
This routine assigns "undefined" values to all internal variables for the transformation function, and initializes UZPACK and USPACK. When drawing several figures in a singles frame, this routine must be called before starting to draw a new graph after the first.