Xerox 6050 User Manual page 165

Joint style
UNJOINT
Does not join the lines.
BEVEL
Joins the outside corner of one line to the outside corner of
the other line.
MITER
Extends the outside corners of both lines until they meet in a
miter.
ROUND
Rounds off the area where the two lines meet.
TRIANGLE
Extends the joint by half the line width, and connects the top
and outer edges of both lines.
MITERED/BEVELED
Extends the joint by the length calculated from the line
width and Miter Limit, and connects the top.