Vast amounts of commenting.
Merge remote-tracking branch 'origin/master'

Conflicts:
	doc/allclasses-frame.html
	doc/allclasses-noframe.html
	doc/constant-values.html
	doc/deprecated-list.html
	doc/help-doc.html
	doc/index-files/index-1.html
	doc/index-files/index-2.html
	doc/index-files/index-3.html
	doc/index-files/index-4.html
	doc/index-files/index-5.html
	doc/index.html
	doc/overview-frame.html
	doc/overview-summary.html
	doc/overview-tree.html
	doc/package-list
	doc/scene/package-frame.html
	doc/scene/package-summary.html
	doc/scene/package-tree.html
	doc/scene/package-use.html
	doc/vehicle/Vehicle.html
	doc/vehicle/VehicleAttitudeHelpers.html
	doc/vehicle/class-use/Vehicle.html
	doc/vehicle/class-use/VehicleAttitudeHelpers.html
	doc/vehicle/package-frame.html
	doc/vehicle/package-summary.html
	doc/vehicle/package-tree.html
	doc/vehicle/package-use.html