Tool Select Grid from List
Main use of this tool is to support tool chain development, allowing to pick a single grid from a grid list. 
- Author: O.Conrad (c) 2015
 
- Menu: Grid|Tools
 
Parameters
|   | Name | Type | Identifier | Description | Constraints | 
| Input | Grid List | Grid list, input | GRIDS | - | - | 
| Output | Grid (*) | Grid, output, optional | GRID | - | - | 
| Options | Grid System | Grid system | PARAMETERS_GRID_SYSTEM | - | - | 
 | Index | Integer | INDEX | - | Minimum: 0 Default: 0 | 
| (*) optional | 
Command-line
Usage: saga_cmd grid_tools 32 [-GRIDS <str>] [-GRID <str>] [-INDEX <num>]
  -GRIDS:<str>	Grid List
	Grid list, input
  -GRID:<str> 	Grid
	Grid, output, optional
  -INDEX:<num>	Index
	Integer
	Minimum: 0
	Default: 0