HP PCL/PJL reference (PCL 5 Printer Language) - Technical Reference Manual Part II

EN LA, Line Attributes 22-19
Miter Limit
The value you specify for miter limit determines the maximum ‘length’
of a mitered join, as shown in the following illustration. The miter limit
is the ratio of the miter length (the length of the diagonal line through
the join of two connecting lines), to the line width. For example, with
the default miter limit of 5, the miter length can be as long as 5 times
the line width.
Figure 22-14Miter Limit
When the miter length exceeds the miter limit, the point of the miter is
clipped to the miter limit (the clipped miter is equivalent to a beveled
join). The default miter limit is usually sufficient to prevent clipping
except at very narrow join angles.
Figure 22-15Miter Limit Clipping
An LA command remains in effect until another LA command is
executed, or the printer is initialized or set to default conditions.