Tree-like UI:
Level 1. Tasklists. Select: open the current list
Level 2. Tasks in the current list (and list's title at the top). Select: short - mark as done/undone, long - open details
Level 3. Details for current task (and its title & done status at the top). Select: mark as done/undone
Also an Error screen ("Please log in").
Tree-like UI: Level 1. Tasklists. Select: open the current list Level 2. Tasks in the current list (and list's title at the top). Select: short - mark as done/undone, long - open details Level 3. Details for current task (and its title & done status at the top). Select: mark as done/undone Also an Error screen ("Please log in").