Block Help (also known as only Help or Help Screens) is a Snap! feature that tells the user what each of the primitive blocks do as the name suggests. Most of the block help screens were made by Nathan Dinsmore who was a major Snap! contributor. Many of the help screens were also inherited from Scratch 1.x.
The following blocks do not have block help:
(new costume @list width ( v) height ( v)(new sound @list rate (44100 v) Hz)paste on [ V]send [ V] to [ V] :: control(timer)(index of [thing] in @list)(append @list @list @delInput @verticalEllipsis @addInput)Snap! developers have been asked to do something about this but so far no action has been taken.