Later rung
501 Practice
Reserved for the rung where gear matters less than what you have already rehearsed.
Later rung. The pages below 301 are the ones to use now.
The far rung
501 will be about practice. A plan you have never walked, a shutoff you have never found, and a radio you have never turned on are still ideas. This rung is where those ideas get boring, which is what you want them to be.
It is not written yet. Climb from 101. Practice starts there anyway: write the plan, find the shutoff, put the paper list in the bag.