3.9 Assignment #3: Practicing DOM

due: Monday, Oct 17

Extend the given DOM viewer program to support

• Deletion of the nodes under the cursor. The cursor is to be moved to the, in the given priority, following sibling, previous sibling, or parent.
• Addition of a child, siblings, and attributes to the node under the cursor. When a child or a sibling is added, the cursor should be placed on the new node. A child may be added only to a childless node.

[a fancier variant of the program: literate view, plain code, core code]