Signals Notebook: What is the difference between 'match exact' and 'match full' chemical search in Signals Notebook?

Selecting 'match exact' will retrieve chemical drawings where the entire scheme is a match, for a chemical element to be a hit it requires that no other fragments be present (fragments include salts/solvates and other reaction components).

Using 'match full' will allow additional fragments in the scheme and will search for the full structure inside the chemical drawing scheme, as such it will return more results.