Constant grid creation.
|   | Name | Type | Identifier | Description | Constraints | 
| Input | Target System (*) | Grid (optional input) | TEMPLATE | use this grid's system for output grids | - | 
| Output | Target Grid | Grid (output) | OUT_GRID | - | - | 
| Options | Name | Text | NAME | - | Default: Constant Grid | 
 | Constant Value | Floating point | CONST | - | Default: 1.000000 | 
 | Data Type | Choice | TYPE | - | Available Choices: [0] bit [1] unsigned 1 byte integer [2] signed 1 byte integer [3] unsigned 2 byte integer [4] signed 2 byte integer [5] unsigned 8 byte integer [6] signed 8 byte integer [7] 4 byte floating point number [8] 8 byte floating point number Default: 7 | 
 | Target Grid System | Choice | DEFINITION | - | Available Choices: [0] user defined [1] grid or grid system Default: 0 | 
 | Left | Floating point | USER_XMIN | - | Default: 0.000000 | 
 | Right | Floating point | USER_XMAX | - | Default: 100.000000 | 
 | Bottom | Floating point | USER_YMIN | - | Default: 0.000000 | 
 | Top | Floating point | USER_YMAX | - | Default: 100.000000 | 
 | Cellsize | Floating point | USER_SIZE | - | Minimum: 0.000000 Default: 1.000000 | 
 | Fit | Choice | USER_FITS | - | Available Choices: [0] nodes [1] cells Default: 0 | 
| (*) optional |