Is URI segment 2 reserved?

[eluser]Pascal Kriete[/eluser]
Normally CodeIgniter urls are www.example.com/controller/function/parameter1/param2/etc ..

Routes are nothing more than regular expressions. ".+" means one or more character, and the parentheses 'capture' that. So, the regular expression xwero is using says www.example.com/mail/anything should point to mail/index/anything .