I know that there are methods to structurally manipulate held expressions (discussed e.g. here), but I failed to apply those for this particular problem: ...
Given a function with the attribute HoldFirst, HoldAll or similar, and a variable, list, how ...
I have: InputField[Dynamic[d]] Dynamic[d] If I enter e.g. a b x^5 h m the entry automatically gets sorted, as per screen ...
I wish to make functional replacement inside Held expression like this: ...