It was hard to start using Todo 7 on iphone. The online manual is for 4.0, very out of date.
I suggest a "help" section under Settings etc, which would offer: "definitions" (of contexts, lists, etc), "suggestions for use" (of contexts, lists, etc, to help us grasp the uses of Todo), and a concise list of shortcut commands (for typing and for Siri voice commands, e.g., "parenthesis tomorrow at 5pm close parenthesis", "caret Work".)
Thanks, I will check them out. :)
please take a look at these articles: