Using Nested Blocks
As was indicated earlier in this chapter, two significant reasons exist for using blocks. The first is to reduce a drawing’s file size. The second is to quickly update all the insertions of a particular block. For example, suppose you have a block that is made up of a circle with a text object in its center, and you have inserted this particular block hundreds of times. If the text value is currently the letter M but needs to be changed to S, you can simply redefine the block with the correct letter. After you redefine it, the hundreds of block insertions are instantly updated with the S text value. This is a very valuable feature that can save you hours of editing time.
The previous example demonstrates a powerful feature ...
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