From Left to Right
Carve With Selected Objects - Carves out shape in other brushes with the selected brushes.
Group Selected Objects - Create an associated group with the objects selected.
Ungroup Selected Objects - Ungroups an associated group of selected objects.
Toggle Group Ignore - Ignore group on / off.
Hide Selected Objects - Hides selected objects.
Hide Unselected Objects - Hide all unselected objects.
Show All Visigroups - Show all Visigroups
Cut - Cuts selected objects.
Copy - Copies selected objects
Paste - Pastes selected objects.
Toggle Cordon State - Toggles cordon state on / off.
Edit Cordon Bounds -
Toggles Select-By-Handle - Toggles select-by-hands on /off.
Toggle Auto-Selection - Toggles auto-select on/off.
Texture Lock - Texture lock.
Texture Alignment - Align textures
Run Map - Run the map.