The Structures layer is intended to identify all free-standing structures. Additionally, it is useful to systematically number these structures for consistency and easy identification. The Number Features geoprocessing tool is designed specifically for this task. By default, these features will be numbered starting with the upper left-most feature and ending with the lower right-most feature. It is important to note that this tool could be used for any point feature class (i.e. Perimeter Defense), but these instructions are written for numbering buildings.

Running the Number Features Tool

1. Within the Clearing Operations toolbox, open the Number Features tool.
2. For the Area To Number field, either:
   1. Click the drop-down and select a polygon that surrounds the features to be numbered (In this case, Area of Operations).
   2. Use the feature template embedded in the tool to click and draw a rectangular area around the features to be numbered.
3. Under Point Features, select the feature class from the map that will be used for this tool (in this case, Structures).
4. Set the Field to Number in which the calculated numbers will be stored.
5. For Output (Numbered Structures), select the NumberedStructures feature class in the Results geodatabase, or a new one. If this is left blank, then the input feature class (Structures) will be overwritten.
6. Click OK.

The next step is to Create Gridded Reference Graphics.