Just curious...

Edit: Screenshots/descriptions
VPView -
screenshotDirectory structure to the left in tree view; preview pane in the lower left; files of the currently selected directory to the right in a detailed list view.
VPCSFiles/directories in a single large treeview. Modification operations performed via menu items.
VPMage -
screenshotAll currently loaded VP files in a list to the left; files/directories in a small treeview to the right; debugging/status output in the middle; modificiation operations performed via buttons below the treeview.
VPCS 2Directories to the left in a tree view; files to the right in a detailed list view; modification operations performed via menu items.
QuickVPDirectories/files at the bottom in a detailed list view; buttons and menus above the list perform modification operations.