I love the SQL command window. It's great for testing SQL without having to fuss about layout. But it's a little under represented. The only way you can get to it that I've found is through the Service pane and selecting to view a table, or by opening a .sql file. You can't save sql files from it, nor is there a "New SQL Command tab" from the File menu or the toolbar. It's a great tool. Show it some love.