The GRG Builder is a tool for creating GRG (KMZ) files using a snapshot of the ATAK map view, map items, and optional overlays such as snapshot information, map scale, compass, and an MGRS grid. There are 3 buttons displayed in the toolbar which help the user setup a GRG:
The "Grid" button allows the user to drop an 8x10 MGRS-aligned grid onto the center of the map. When first selected, a dialog appears allowing the user to choose the grid spacing (in meters). While the grid is active the button will be highlighted green. Pressing the button while the grid is active will clear the grid.
The "Labels" button opens the point dropper drop-down to the spot map and label menu. By default the label point dropper will be activated.
The "Export" button begins the imagery processing tool. If the grid has been dropped the image will automatically snap to the grid extents. A dialog is displayed showing the progress of the high resolution map capture. Once finished the user has control over several of the styles and features drawn onto the final output image before saving. Users can control the visibility position of overlays as well as the size of map items and labels.
GRGs are saved in the KMZ format to the /atak/tools/grgbuilder/ folder.