View source for ORIGIN "I"

[[INDEX_A|A]] · [[INDEX_B|B]] · [[INDEX_C|C]] · [[INDEX_D|D]] · [[INDEX_E|E]] · [[INDEX_F|F]] · [[INDEX_G|G]] · [[INDEX_H|H]] · [[INDEX_I|I]] · [[INDEX_J|J]] ·
[[INDEX_K|K]] · [[INDEX_L|L]] · [[INDEX_M|M]] · [[INDEX_N|N]] · [[INDEX_O|O]] · [[INDEX_P|P]] · [[INDEX_Q|Q]] · [[INDEX_R|R]] · [[INDEX_S|S]] · [[INDEX_T|T]] ·
[[INDEX_U|U]] · [[INDEX_V|V]] · [[INDEX_W|W]] · [[INDEX_X|X]] · [[INDEX_Y|Y]] · [[INDEX_Z|Z]]
== Definitions ==

a [[VIEWPOINT|viewpoint]] from which one can perceive [[ANCHOR_POINTS|anchor points]].
''(PDC 13)''