New answers tagged custom-notation
You can also do this: << Notation` Symbolize[ParsedBoxWrapper[SubscriptBox["_", "_"]]] If you want to, you can import the Notation package first, then use the Symbolize function, so you don't have to use the ParsedBoxWrapper function, and just enter _,(ctrl+_),_. What this does, is set a pattern matching a subscripted character as a symbol. ...
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