We don't do it here on regular schematics -- none of our schematic capture tools support the style, even if we wanted to. And I can't claim to have seen any "electronic" schematics doing it this way (except rather old ones), but I do still see plenty of "electrical interconnect" schematics (stuff like how one box hooks up to another -- PLC wiring, machine control wiring -- the sort of thing electricians in factories refer to) that do it this way.
Can you cite any references to support this "fact?"
Aren't you the same guy who was telling John Larkin he doesn't know how to use a vapor phase degreaser properly?
Where I work, we're doing contract design and light manufacturing for various military and commercial entities, so we'll do whatever they want so long as the work is interesting and we can make money at it. Very few contracts are so "precise" that they call out *any* standard for schematic drawings. While the client gets a copy of the schematic, I suspect the vast majority of times they just file it away somewhere, never to be seen again: They just want a box that works and is reliable, they don't care that much about our process in designing them.
---Joel