OptionaloperatorOperator for cellIs type
OptionalpriorityPriority of the rule (lower = higher priority)
Cell range (e.g., 'A1:A100', 'B2:D50')
OptionalstyleStyle to apply when rule matches
OptionaltextText to search for (containsText type)
Rule type
OptionalvalueValue(s) for comparison
Optionalvalue2Second value for 'between' operator
Conditional formatting rule