It will look like this:

Block name :: custom

Add an input

  :: custom  reporter  

Add a boolean

 <> :: custom 

Add a label

 :: custom 

Block shape

Custom block {
} :: custom loop



Custom block {
} 2nd label text {
} :: custom

Custom block :: cap custom

Custom reporters and booleans are being suggested on this topic.
Custom C blocks are being discussed on this topic.

k7e wrote:

Custom reporters and booleans are being suggested on this topic.
Custom C blocks are being discussed on this topic.

Thanks for the link! It does look like this is a duplicate topic so I'll close it to keep the conversation all in one place. Please use the existing topic in the link above.