This is a good read. I ran into an interesting meta-problem on page 12 (numbered page 9 on the page itself). What do you call the diagram labeling? The single

This is a good read. I ran into an interesting meta-problem on page 12 (numbered page 9 on the page itself). What do you call the diagram labeling? The single world label pointing at a feature with a line could be a 'callout' perhaps. What is the word-in/around-arrow pointing to two vertical lines? A range indicator? It looks like: |<--label-->| I've also seen a variation where the word points to a line covering the range with bracketed ends, somewhat like: label -[ feature It's a similar problem to "what do I call that operator?" when you don't know what it is, like ?: being "the ternary" operator (or more precisely the conditional operator)