Please confirm that your system has java runtime environment.
Please download the latest .zip file from https://sourceforge.net/projects/rmapviewer/files/mac/ .
Please double-click the .zip file to extract the RMapViewer application and a data folder.
Security setting might prevent 3rd-party applications from launching.
Please change the security level at your own risk.
Please download the latest .zip file from https://sourceforge.net/projects/rmapviewer/files/windows/ .
Please extract the .zip and place the RMapViewer-<version> directory in a non-network drive.</version>
Double click the RMapViewer file (with a gear icon) in the RMapViewer-<version> directory to launch RMapViewer.</version>
By dropping an .rmap file on the window, the reaction map view shows the map.
When the reaction map view has the focus, down-arrow key will magnify the map and up-arrow key will pan it out. You can also use scroll wheel to zoom in/out the map.
Dragging a mouse on the reaction map view will shift the visible scope of the map, which is indicated as a red rectangle in the global map view. The red rectangle is also draggable.