|This article or section documents something not included in the current version of Scratch (3.0). It is only useful from a historical perspective.|
The Beep block was a Sound block and a Stack block. The block produces the sound of when a key is pressed when it has no use. It was removed in May 28, 2005 for unknown reasons and made an Obsolete Block, but probably because the user could just download the sound and use the Start Sound () block.
Currently, there is no workaround but downloading the sound effect and use the Start Sound block, like in the example below
play sound [beep v]