Lightroom Classic's F8 hides the right panel; F6 and F7 (filmstrip, left
panel) were bound but F8 did nothing. View > Right Panel (view.rightPanel,
F8 as a secondary key like F6 / F7) hides the right panel and shows the
same one again next time, or Edit when none was hidden. Hiding a tool
ends it, as closing its panel does.
Gap 28 listed rating [ ], flag cycling and F1 help as missing; they are
bound, so the entry now lists only filter-bar keys, Tab / Shift+Tab and F5.