cf50a5b8_GPlates_Data_Manual_Table_3__Properties_Table_Used_In
[Property] motion [Optionality] Optional [Description] Used to specify whether a transform or strike-slip boundary is "LeftLateral" (sinistral — when viewed from one side of the boundary, the opposite side appears to be moving to observer’s left), or "RightLateral" (dextral — the opposite side appears to be moving to the observer’s right). It can also take a value of "Unknown" or "None". [Used In] 
Transform
GPlates Data Manual
Used In