| Code Figure | Meaning |
|---|---|
| 0 | Circle [m] (See Note) |
| 1 | Rectangle [m,m] (see Note) |
| 2 | Square [m] (see Note) |
| 3 | Wedge [m, degree, degree] (see Note) |
| 4 | Span of grid boxes centered around grid box i,j [x,y] (see Note) |
| 5-191 | Reserved |
| 192-254 |
Reserved for Local Use |
| 255 | Missing |
| Notes: (1) The following additional arguments must be specified: • Circle - 1 argument for the radius in meters • Rectangle - 2 arguments for the length in 1. west-east and 2. south-north in metres • Square - 1 argument for the length of the equal-length sides in metres • Wedge - 3 arguments for 1. radius in metres and 2. start and 3. end radius in arithmetic degrees with 0 on the positive axis along west-east and counted counter-clockwise. • span of grid cells - 2 arguments regarding the number of grid cells in 1. west-east and 2. south-north so that the span is i+/-x and j+/-y |