Combining Objects into Blocks - AutoCAD 2011 and AutoCAD LT 2011: No Experience Required - page 331

inserting the Window Block

Several factors come into play when you're deciding where to locate windows in
a floor plan:

The structure of the building

The appearance of windows from outside the building

The appearance of windows from inside a room

The location of fixtures that might interfere with placement

The sun angle and climate considerations

U n d e r s t a n d I n g g r o U p s
Another way you can make several objects act as one is to use the GROUP
command. Groups differ from blocks in that they do not replace separate
objects with a single definition but instead associate several objects by name
so they react as if they were a single object. (Some similar programs use the
term named selection set to represent what AutoCAD calls a group.)
Selecting one member object from the group selects all the members. Unlike
objects in a block, members of a group can be added or removed, and you
can toggle the group to allow the individual members to be selected. Use
groups when you know the association between the objects is not perma-
nent, and use blocks when it might be. The procedure for creating a group
is as follows:

1. Enter GROUP ↵ at the command line to open the Object Grouping

dialog box.

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