TME provides the ability to edit markup attributes, and preview the pages. Most of the menu picks insert TML equivalent of an HTML tag. You can then access the options for the tag prior to the cursor using Alt-o. This will popup the Attribute editor. Some of the menu picks are for TML macros, which implement shortcuts for tables and such.
Alt u Undo Alt f Find Alt g Find next Alt s Save file Alt b Bold Alt i Italics Alt p Insert a paragraph on a new line by itself Alt n Insert a line break and go to next line Alt o Open Properties for tag before cursor Alt = H=, Heading at current level Alt + H+, Heading at current level +1 Alt - H-, Heading at current level -1