[Bnomic-private] Developing the grid

[Glotmorf]

{{ _Just What IS Level Ground Anyway?_

In Rule 301:

-	Replace the text of subsection A.1 with the following:

	There exists an environment known as the Grid.  The Grid is composed of=
 surface units, which in turn contain locations, also known as Squares.=
  The Grid is 20 surface units wide by 20 surface units long.  The surface=
 units are numbered from 1 to 20 horizontally (the x axis) and 1 to 20=
 vertically (the y axis); squares in surface units use the x and y axis,=
 but also employ elevation (the z axis), expressed as units of elevation=
 above or below grid level (where z is equal to 0).  Each surface unit on=
 the Grid can be expressed as an (x,y) coordinate location, with (1,1) in=
 the lower left-hand corner, and (20,20) in the upper right.  Each square=
 on the grid can be expressed as an (x,y,z) coordinate location, with x and=
 y indicating the surface unit; if the z coordinate is not supplied for a=
 square, it is assumed to be the surface square.

-	Replace the first two paragraphs of subsection A.3 with the following:

	Each Grid Square has two attributes called Substance and Depth.  Substance=
 describes the material of which the square is made.  Depth denotes where=
 the square is in relation to the surface (unmodified topmost point) of a=
 surface unit; every surface unit contains a surface square -- a square=
 whose depth is zero.

In Rule 948:

-	Replace the text "depth increases from less than 10 to greater than 10"=
 with "elevation decreases to -11 or lower".

-	Replace the text "depth decreases from greater than 10 to less than 10"=
 with "elevation increases to -9 or higher".

In Rule 949:

-	Replace the word "depth" with the word "elevation".

On the Grid:

-	Establish surface squares for every surface unit.  Surface squares where=
 the former depth of the unit was 0 have elevation 0; surface squares where=
 the former depth of the unit was non-zero have elevation equal to the=
 negative of their former depth.

}}

[[ Yes, folks, I'm making the grid officially three-dimensional. ]]

						Glotmorf