These blocks shouldn't exist. Most of the hidden blocks were in Scratch a long time ago, but they were erased from Scratch, by the Scratch Team, as if they never even existed. There's even an entire extension that has been almost completely forgotten about, used only for testing purposes. P.S. all the blocks in the thumbnail actually exist as of S3.0 in Aug 10, 2024, I promise. Changelog: Aug 10, 2024: Initial Oct 17, 2024: Added procedures_declaration, argument_reporter_string_number, argument_reporter_boolean Oct 19, 2024: Added color picker block and cursed boolean blocks
I couldn't have done this without the Scratch Wiki: https://en.scratch-wiki.info/wiki/Hidden_Blocks
