Next: Setting up a scenario Up: Tutorial Previous: Parameter handling

## Starting GREAT-ER

If you have created a link as mentioned under item eight of the installation, start GREAT-ER using its icon. Alternatively, start ARCVIEW and select from the menu File the item Open Project... Browse through the directory tree to the directory of your GREAT-ER installation. Open the project file `great-er.apr`.

After the start-up GREAT-ER presents the initial screen. It shows a map of Europe and all currently available catchments.

Figure 2.1: GREAT-ER - initial screen

GREAT-ER is by default in the Easy-to-use mode: The ARCVIEW menu bar is replaced by a specific GREAT-ER menu bar, the number of buttons and tools is reduced to the set needed for GREAT-ER. Please note that each menu item (when highlighted) is explained briefly at the bottom left corner of the ARCVIEW window.

The menu items are ordered according to the usual work flow of a simulation session: initially you have to create or select a scenario. The next step is to modify the data. Usually users will simulate a specific substance with several catchments and may want to use more detailed models if the simple ones identify issues. Hence the menu bar reflects this order of steps: Substance, Catchment and Model. The following items enable you to analyse the simulation results and offer various options to display accessory data or to modify the presentation of data based on additional information.

Next: Setting up a scenario Up: Tutorial Previous: Parameter handling