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Common dimension group codes (continued)<br />
Group codes<br />
Description<br />
1 Dimension text explicitly entered by the user. Optional; default is the<br />
measurement. If null or “”, the dimension measurement is drawn as<br />
the text, if “ “ (one blank space), the text is suppressed. Anything else is<br />
drawn as the text<br />
53 The optional group code 53 is the rotation angle of the dimension text<br />
away from its default orientation (the direction of the dimension line)<br />
(optional)<br />
51 All dimension types have an optional 51 group code, which indicates<br />
the horizontal direction for the dimension entity. The dimension entity<br />
determines the orientation of dimension text and lines for horizontal,<br />
vertical, and rotated linear dimensions.<br />
This group value is the negative of the angle between the OCS X axis<br />
and the UCS X axis. It is always in the XY plane of the OCS<br />
210 Extrusion direction (optional; default = 0, 0, 1)<br />
DXF: X value; APP: 3D vector<br />
220, 230 DXF: Y and Z values of extrusion direction (optional)<br />
3 Dimension style name<br />
Xdata belonging to the application ID "ACAD" follows a dimension entity if<br />
any dimension overrides that have been applied to this entity. See “Dimension<br />
Style Overrides” on page 76.<br />
For all dimension types, the following group codes represent 3D WCS points:<br />
■ (10, 20, 30)<br />
■ (13, 23, 33)<br />
■ (14, 24, 34)<br />
■ (15, 25, 35)<br />
For all dimension types, the following group codes represent 3D OCS points:<br />
■ (11, 21, 31)<br />
■ (12, 22, 32)<br />
■ (16, 26, 36)<br />
Aligned Dimension Group Codes<br />
The following group codes apply to aligned dimensions. In addition to the<br />
group codes described here, those listed in “Common Group Codes for Enti-<br />
DIMENSION | 71
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