Where a stage's own code may have copied a value from, as data. The rule cannot see what a string or a threshold was built from, so it asks these instead: the taint law (RedactionRule.retainStageText, RedactionRule.serveThreshold).
Optional
Readonly
The stage's args ($getArgs()). Reading them never counts in selectedReads.
$getArgs()
selectedReads
Reads of a selected value on this frame so far (StageContext · taintedReads).
StageContext · taintedReads
Where a stage's own code may have copied a value from, as data. The rule cannot see what a string or a threshold was built from, so it asks these instead: the taint law (RedactionRule.retainStageText, RedactionRule.serveThreshold).