Now how do we run GAMS. We do this by either clicking with the mouse on the button that contains a red arrow 
or pressing the F9 key.
In turn this causes GAMS to run and also causes the so-called process window to appear which gives a LOG (actually containing the LOG file) of the steps GAMS goes through in running the model.
One may also have to do some housekeeping to get the process window so it does not obscure the LST file. I recommend narrowing it and pulling it off to the right as shown below, but users may place it at the bottom, maximize it or do whatever appeals.
