Bidirectional Class - European Separator

European Separator is a bidirectional class that marks characters, typically punctuation like the slash or comma, used to separate European numeral sequences, such as thousands or decimal groupings. In visual text ordering, it acts as a neutral or weak separator, taking on the directionality of adjacent European numbers, so it helps preserve the correct reading order when mixed with bidirectional text, like Arabic or Hebrew, without breaking the numeric value. It does not introduce strong direction itself, but instead adapts, ensuring that numbers written with European digits remain cohesive and correctly oriented relative to surrounding text.