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why cann't I use

RemoveSymbolize[ParsedBoxWrapper[SubscriptBox["_", "_"]]] 

to remove all subscripts? Just like

Symbolize[ParsedBoxWrapper[SubscriptBox["_", "_"]]] 

enter image description here

After RemoveSymbolize[], q1 should be subscript, why isn't?

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up vote 1 down vote accepted

RemoveSymbolize does not seem to respond to patterns. Unclear whether this is by design or a bug. In any case you can use ClearNotations to revert from symbol to subscript:

enter image description here

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Why does Mathematica give this error : ClearAll::wrsym: Symbol NotationPrivateprotected is Protected. >> when i run it the second time. – novice Feb 19 '13 at 12:45
Because the package begins with ClearAll["Notation`Private`*"] but there is no Unprotect["Notation`Private`*"] before that line. After you run the package the first time everything in this context is protected so without the Unprotect you get the warning when running a second time. You can either add the Unprotect line or just ignore it. None of this alters the answer. – Mike Honeychurch Feb 19 '13 at 22:25

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