3 Search for the "best" WWW browser and setup environment (`$BROWSER`) accordingly.
5 The plugin looks for the following WWW browsers and stops at the first one it finds:
7 - open (on non-Linux platforms)
8 - firefox (when DISPLAY is set)
9 - chrome (when DISPLAY is set)
18 - `$BROWSER`: Command (including parameters) to run a WWW browser.