First, Second Extension Line Origin

Prompts for the first and second extension line origin points.

Dimension Line Location

Uses the point you specify to locate the dimension line and determines the direction
to draw the extension lines.

Mtext

Displays the In-Place Text Editor, which you can use to edit the dimension text. Use
control codes and Unicode character strings to enter special characters or symbols.
See Control Codes and Special Characters.

If alternate units are not turned on in the dimension style, you can display them
by entering square brackets ([ ]).

The current dimension style determines the appearance of the generated measurements.

Text

Customizes the dimension text at the Command prompt. The generated dimension measurement
is displayed within angle brackets.

To include the generated measurement, use angle brackets (< ) to represent the generated
measurement. If alternate units are not turned on in the dimension style, you can
display alternate units by entering square brackets ([ ]).

Dimension text properties are set on the Text tab of the New, Modify, and Override
Dimension Style dialog boxes.

Angle

Changes the angle of the dimension text.

Horizontal

Creates horizontal linear dimensions.

Dimension Line Location

Uses the point you specify to locate the dimension line.

Vertical

Creates vertical linear dimensions.

Dimension Line Location

Uses the point you specify to locate the dimension line.

Rotated

Creates rotated linear dimensions.

Object Selection

Automatically determines the origin points of the first and second extension lines
after you select an object.

For polylines and other explodable objects, only the individual line and arc segments
are dimensioned. You cannot select objects in a non-uniformly scaled block reference.

If you select a line or an arc, the line or arc endpoints are used as the origins
of the extension lines. The extension lines are offset from the endpoints by the distance
you specify in Offset from Origin in the Lines and Arrows tab of the New, Modify,
and Override Dimension Style dialog boxes. See DIMSTYLE. This value is stored in the
DIMEXO system variable.

If you select a circle, the diameter endpoints are used as the origins of the extension
line. When the point used to select the circle is close to the north or south quadrant
point, a horizontal dimension is drawn. When the point used to select the circle is
close to the east or west quadrant point, a vertical dimension is drawn.