Make AUTOGRAPH/SGS/GKS ready for plotting.
Plot (x,y) data, with labelling, using AUTOGRAPH.
Set up an AUTOGRAPH label.
Select one of the two NCAR Roman fonts.
Save the state of AUTOGRAPH.
Restore the state of AUTOGRAPH.
Switch between NCAR and SGS plotting.
Make the AUTOGRAPH graph window match the current viewport (= zone if using SGS).
Make the current SGS zone world coordinates match the AUTOGRAPH grid coordinate system.
Read a cursor position.
Transform grid X coordinate to user X coordinate.
Transform grid Y coordinate to user Y coordinate.
Transform user X coordinate to grid X coordinate.
Transform user Y coordinate to grid Y coordinate.
Plot a character string.