| Reference Filing | Nonactionable Items | 20000 Foot | Natural Planning Model | Make It Up, Make It Happen |
| Brainstorming | 10000 Foot | Mind Like Water | Organizing | Project Thinking |
| Defining Purpose And Principles | 30000 Foot | GETTING THINGS DONE BINGO (free square) | Horizontal & Vertical Control | Daily Files |
| Avoid Hanging Files | Defining Your Work | Action Reminders | Action Lists | Runway |
| Next Action | Waiting For | Five Stages Of Workflow | 40000 Foot | One Alpha System |