Below is a Clickable Map of the Molecules menu. You can
click on any item in the picture, and the explanation will be
shown in a separate window.
Note that all text query options allow wildcards (using "*"), that all number query options (integer and real) allow comparison and range queries, and that all query options are automatically combined (in an "and" fashion). The query options filled in below provide an illustrative example, although admittedly not a very practical one.