OperabilityRule
OperabilityRule =
"covered"|"no-pointer"|"inert"|"disabled-without-reason"|"name-mismatch"|"oversized-option"
Defined in: js-api/src/u2core/inspect.ts:87
A rule operability checks: covered — at its centre the page answers another element; no-pointer —
pointer-events: none on it or above it in its control that no :hover of an ancestor taking the pointer lifts;
inert — inside an inert region that says no reason;
disabled-without-reason — off with no reason on it, its control or a control around it that is off too;
name-mismatch — an icon-only button whose
accessible name is not its tooltip; oversized-option — an option taller than the one-row rail it sits on.