Arrows

Various basic arrows can be drawn from the current drawing position using the routine:

where xhead,yhead is the position of the arrow tip or head and the argument head specifies the type of arrow head (GOPEN, GCLOSED or GSOLID). An optional label (gLabel) may be added at the arrow head, justified according to the optional argument gJustify (GLEFT or GRIGHT). The arrow is drawn using the current line attributes and the label is drawn using the current character attributes (apart from justification).