So, in terms of work items, that means roughly:
1. split the XML attributes and XML tree into separate dockable panels 2. add multiple selection to the XML tree 3. add show/hide/lock toggles to SPItems in the XML tree 4. add appropriate context menu items for tree items
So, in terms of work items, that means roughly:
1. split the XML attributes and XML tree into separate dockable panels
2. add multiple selection to the XML tree
3. add show/hide/lock toggles to SPItems in the XML tree
4. add appropriate context menu items for tree items