Facilities Designer Raymond Espinoza was inspired to expand on a previous Cadalyst CAD Tip (Paste As a Named Block, Tip No. 3677) that illustrates how to paste objects as a block in AutoCAD. He explains how to manage the naming of the blocks that are created this way.
"I often use the Ctrl+Shift+V keyboard shortcut, but if it's a block I want to use on a regular basis, the default block name assigned by the Paste command is not suitable for my needs. In that case, I use the Rename command. Use the List command to find the current block name, then use Rename to assign the block a more suitable name. Under the Block category, select the block you want to rename. Then enter the new block name in the Rename To field. You will find you can use the Rename command to assign new names to other entities besides blocks."
Notes from Cadalyst Tip Patrol: Naming blocks in a useful manner is a good idea. It's very easy to create a block by using Ctrl+C (Windows Copy) and Ctrl+Shift+V (Windows Paste) to paste the selected objects as a block. Unfortunately, AutoCAD gives the block an arbitrary name made out of alphanumeric characters; they won't make any sense. The Rename command will easily handle this for you once you figure out which block it is.