Fletcher documentation is currently a work in progress. Please refer to the source code if there is not a page with documentation of the desired features (a known useful addition would be the admin commands).
commit 76e5b8d7279dc604d847b5ecc7912b83f18b1bbd Author: Novalinium <nova@noblejury.com> Date: 2023-06-30T13:47:12-04:00 OK, yea, crosslink it