Creating documentation pages with usage

Ideas
1

I just discovered something very helpful. If you create a function with usage, then when you create a documentation page with the documentation tools generate missing documentation pages, the usage field will already be filled in.
Here’s an example.

UnevaluatedHead // ClearAll

UnevaluatedHead::usage = "UnevaluatedHead[expr] finds the head of expr without evaluating it."


SetAttributes[UnevaluatedHead, HoldAll]
UnevaluatedHead[expr_] :=
 Head[Unevaluated[expr]]



     UnevaluatedHead[args___] := Null /; CheckArguments[UnevaluatedHead[args], 1]
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