As with basic blocks, you can edit the label associated with a compound block and switch between displaying and hiding it. It is often useful to give a compound block a descriptive, concise label that reflects its functionality or usage. Since the contents of a compound block are usually not visible, a good label can be particularly helpful for understanding its functionality in a simulation model.
The procedure for saving a compound block to disk and also for adding it to a template for reuse is identical to the procedure
described in Chapter 6: Blocks, for basic blocks. The default filename extension for a saved compound block is .cblk and the default save folder is Resources\block.