This project consists of custom blocks to count the number of costumes in a given sprite (or backdrops in the stage). That could be useful for automatically updating the number of costumes/backdrops for projects that do upload a lot of assets and/or require the user to add an asset.
An interesting thing I found when copying scripts with this-sprite-only variables, is that the name before the colon changes to "Stage" automatically Tags: #Custom_Block