Terms and Abbreviations

The following describes common terms and abbreviations used in this report.

Orthogonality	A measure of how perpendicular grid cells are, 90^o is optimal.
Orthogonal Deviation	The deviation angle away from 90^o.
Orthogonalize	The act of "improving" a grid, so its grid lines are more perpendicular.
Refine	Increasing the cell resolution of the grid.
Coarsen	Decreasing the cell resolution of the grid.
Spline	A line that is used to define the boundaries of a grid, four splines are required to generate a grid.
Polyline	The P2D shape file the user uploads into Grid+ usually serves as an outline to draw the splines.
LMC	Left mouse click
RMC	Right mouse click