Every place that names a Telegram channel drew either lucide's Send or SF
Symbols' paperplane. Both are outlined planes pointing up and to the right,
which reads as "submit" rather than as Telegram.
The web side gets two shapes: the full circular mark where the icon stands
on its own as a brand, and the plane alone for dense rows where a filled
disc would read as a bullet. Both declare evenodd so the knockout does not
depend on subpath winding.
The three apps get the same plane as a vector asset with template
rendering, so it tints from the surrounding colour exactly like a symbol.