资 源 简 介
When I start planing a trip, project, or just a shopping, I like to do it in hierarchical way.
Say, for a trip I need maps, camp equipment and some food
Camp equipment is divided into personal and common, where common can include tents, campfire tools, and campfire tools contain an axe, a saw and a barbecue grill.
Maps contain paper ones and GPS waypoints, and so on.
In any time you can increase the detalisation level of your plans.
Additional functions include checking complete tasks with checks prorogation up the tree and adding numeric values(say, prices) to records. Numeric values are also summed up by the tree.
