Is there a way when editing a table to default a field to NULL? I ended up having to go back to the "text method" of editing my table (using the ALTER TABLE command) because I couldn't get a NULL value as the default for the fields.

I'm using Windows XP and MyCC 0.8.4 alpha, perhaps there's a keyboard shortcut (such as Microsoft SQL Server's "CTRL+0") that puts a NULL in that box?