Alternatives to "check for well-formedness"?

A valid document.
A well-formed document.
To validate a document.
To check a document for well-formedness...?

I'm hardly the first writer to run into this problem. There seem to be no
good verb for "check for well-formedness". Or did I just miss it? Are there
any other words that has been used for this?

Gustaf

Gustaf Liljegren