Both links and checkboxes end up in isolateChecked which does ≥N.

for isolate atoms LINKS with two, three, ... in the ALTLOC dialog
	makeAltLocHelp2() and makeAltLocTable() in help2.js
		call makeIsolateAltLocLinks() in help2.js
			calls isolateAL(N) in scripts.js
				calls hideChecked("al2") calls isolateChecked("al2") in scripts.js

for the isolate atoms with [ ]≥2, or [ ]≥3, or ... CHECKBOXES in the Isolate dialog
	makeHideCheckboxes() in help.js
		calls hideChecked("al2") calls isolateChecked("al2") in scripts.js
			set isolatedAtomExpression to GREATER THAN OR EQUAL TO level
				using altLocMultBitset (for 2), and series of or'd locsPerAtomBitsetN's