To get started, type either :<key> or /<cmd>
/e(ngine) [ya|google|ddg|searx|etc] - change current search engine
/a(dd) example example.com ex example website - add a website with name
'example', shortcut 'ex' and (optional) a description 'example website'
/a(dd) e(ngine) example example.com/?q= - add a new search engine with name 'example'
/r(emove) example - remove a website with name 'example'
/r(emove) e(ngine) example - remove a search engine with name 'example'