gathering rosebuds

I do not think that a headlong rush to implement all the necessary infrastructure is the best approach here. Its good to smell the flowers and pick the rose buds along the way.

• When a topic header is displayed, the descriptor unit, if any, is verified.
• The results of determining the cabinet for a given topic is saved in a hash map--important info that costs something to calculate. Retaining this accelerates the location of a topic's descriptor unit.
• Descriptor units are now associated by their base name only. And they must be folders in the DescriptorUnits Drawer. By using the du name, descriptor units will not be so hard to handle when posting roles to another cabinet/ark.
• Children are now listed by usage and name, rather than usage and pathname.
• A topic's document is now displayed. Crudely, but it is displayed.
• The standard descriptor units for cabinets have been reviewed and fixed up.

I'm also thinking that there are a number of commands I could implement now, like ccd, ccdu and t. Really, forward progress is almost pointless unless I take the time to fill in at least some of the gaps as I go.

Bill