# Symbolize Subscript doesn't work

I want Mathematica to interpret subscripted variables as symbols. I found documentation suggesting the Notation package could do this, but if I do:

Needs["Notation"]
Symbolize[ParsedBoxWrapper[SubscriptBox["_", "_"]]]
x = 1
Subscript[x, 1]


I still get:

1
Subscript[1, 1]


Am I doing anything wrong?

In order to be recognised as symbols the subscripted forms need to be keyed in control-_, you cannot explicitly use Subscript:
When you use Subscript[] the arguments are replaced by their values before being passed to the function, but if you do x Ctrl+_ 1 the Notation package can grab it before the replacement.
• Just checked: SetAttributes[Subscript, HoldAll]` indeed prevents the value substitution, but the result still is not recognized as a symbol that can for example be used in the function definition pattern. – george2079 Sep 10 '14 at 15:15