On the Subject of a Coordinate Grid
Column first or row first?
All information pertaining to the module can be found in the original manual.
Table 1: grid size formats
|Format||How to interpret|
|x||The number x is a product of two primes. The grid’s width is the larger prime, the height the smaller.|
|(x)||Same as x, but width and height are swapped.|
|x×y||x is the width, y the height of the grid.|
|x by y||x is the height, y the width of the grid.|
|x*y||x is the total size of the grid, y the height.|
|x : y||x is the total size of the grid, y the width.|
Table 2: grid location formats
|[x,y]||Column, then row; top-left is [0,0].|
|letter number||Column, then row; top-left is A1.|
|<x, y>||Row, then column; top-left is <0, 0>.|
|x, y||Row, then column; top-left is 1, 1.|
|(x,y)||Column, then row; bottom-left is (0,0).|
|letter-number||Column, then row; bottom-left is A-1.|
|“x, y”||Row, then column; bottom-left is “0, 0”.|
|x/y||Row, then column; bottom-left is 1/1.|
|[x]||Cell number in scanline order; top-left is .|
|xth||Cell number in scanline order; top-left is 1st.|
|#x||Cell number in Cartesian order; bottom-left is #1.|
|四十七||Cell number in Chinese reading order; top-right is 一. See Table 3 for Chinese numerals reference. The example shown here represents the number 47.|
Table 3: Chinese numerals
 Scanline order, also known as reading order, starts at the top-left, moves right across the row, and then continues likewise with each row from top to bottom.
 Cartesian order, also known as geometric order, starts at the bottom-left, moves right across the row, and then continues likewise with each row from bottom to top.
 Traditional Chinese reading order starts at the top-right, moves down the column, and then continues likewise with each column from right to left.