DIM PLC (Dimension placement) allows you to specify
placement position of text in dimensions. There are a 
total of nine possible alignment points for the text in
dimensions.

Set the placement axis by choosing from the following
options:

HORIZTL - to position the text horizontally based on the
length of the longest line in notes and text and the
relative width of the dimension with its tolerance. Choose
an alignment position for text placement: LEFT, CENTER,
and RIGHT. Each placement represents where the text or
dimension begins with respect to the position on the 
screen indicated by the cursor.

VERTICL - to position the text vertically based on the
height of the entire dimension, or relative to the first
line of text in notes and labels. Choose an alignment
position for the vertical placement of text: BOTTOM,
CENTER, or TOP. Each placement represents where the text
or dimension is based from, with respect to the position
on the screen indicated by the cursor.

AUTO CEN - to position the text of linear, radius,
diameter, and angular dimensions in the center of the two
witness lines. Indicate if you want the dimension text
automatically centered between the witness lines. Choose
NO if you want to manually indicate text positions. Choose
YES if you want to be automatically center about the
midpoint of the dimension's leader arc.
