Hello All,
I have use Firefox most of the time, but I do not trust this application anymore. (too many straight modifications, and strange application behavior when using it).
For some things i use Firefox, so I do not want to delete Firefox from my system entirely.

I have installed the Opera Browser on my system, to use it as my main browser.

1. Where and How can I Set opera to be my default browser of my Open Suse O.S.

Thanks for your help, answers