Technical information

Working with Point Groups | 51
Point group features in AutoCAD Land Desktop include the following:
■ Persistent Properties: Point groups have persistent properties. This means
that if points that match the properties of a point group are modified in
some way, or if points were added to or removed from the point database,
you can be alerted to update the point group. By using the Check Status,
Show Changes, and Update features, you can check for changes to the
point groups, show exactly which points that have changed, and update
the point groups.
■ Point Selection by Raw Description Matching: You can select the points
to include in a point group by specifying raw description matches from
the Raw Desc Matching tab. The list that appears on this tab is derived
from the defined description key codes in the project. All points in the
point database with raw descriptions that match the selected raw descrip-
tion are included in the point group.
NOTE The list on the Raw Desc Matching tab is derived from the defined
description keys in the project, but this tab does not use Description Key
settings, such as the ascending/descending sort order setting. Be sure to
check the point list derived from selected raw descriptions, especially when
using wildcard characters.
■ Saving To and Loading From a Prototype:You can save a standard point
group file to a prototype that you can load into other projects.
■ Simplified Point Selection Methods: The Create Point Group dialog box
has separate Include and Exclude tabs for specifying the points to include
or exclude from the point group. A Summary tab summarizes the proper-
ties you define for the group and lists the total number of points in the
group.
■ Additional Point Commands: Insert points into the drawing, remove
points from the drawing, erase points, lock, and unlock points in the
Point Group Manager dialog box. Select the points and right-click to dis-
play these options in the shortcut menu.