Assuming nothing about MOM is know, finding things presents a problem. The solution is to use UNIX utilities such as grep. For example, suppose all areas within the model having anything to do with isoneutral mixing are to be located. Searching for option isoneutralmix with the following command
grep -i isoneutralmix *.[Fh]
will find all such sections. The ``-i'' option is useful because it ignores upper/lower case distinctions. Searching for names of variables can likewise show every place where they are used. Definitions for variables can be seen by searching all ``.h'' files. Another very useful UNIX utility is ``diff'' as described in Section 3.13.