DCL:GRPH2:UFPACK: Arrow Routines
The UFPACK is a subroutine package that draws arrows (adds two symmetrical
lines at the end of a line segment.)
The functions that were realized in this package is all realized by the arrow
sub-primitives in GRPFH1, and so this package will be deleted in the future.
Only a list of the subroutines will be given here. The corresponding routines in GRPH1/SGPACK are shown in parentheses.
UFLNZU (SGLAZU) Draws an arrow in the UC (also sets attributes.) UFLNZV (SGLAZV) Draws an arrow in the VC. (also sets attributes.) UFLNU (SGLAU) Draws arrows in the UC. UFLNV (SGLAV) Draws arrows in the VC. UFSLNI/UFQLNI (SGSLAI/SGQLAI) Changes/inquires the line index. UFPGET/UFPSET (SGPGET/SGPSET) Inquires/changes an internal variable.
The difference between the specifications of arrows in the UFPACK and the SGPACK is that an arrow in the UFPACK only has the attribute line index, while an arrow sub-primitive has two attribute, the line index and line type.