If you're familiar with the HTML markup language, you may want to edit markup directly with Cosmo Create's HTML source editor. Follow the link for the topic that interests you:
For complete details on the source editor interface itself, see the Source Editor reference card.
The colors and fonts used to identify the various parts of the HTML source can be customized through the .cosmocreate/cosmocreate-preferences file in your home directory. For information on which resources to modify, see the cosmocreate man page.
See HTML Tag Reference for a description of HTML tags. You can open this tag reference page directly from the Edit Source window by placing the cursor within a tag and pressing Ctrl+F1 or by selecting "HTML Tag Reference" from the Help menu.