On modern Linux distributions, there is support for the ellipsis (…) on the
keyboard layout; The combination is [AltGr+.]

On Windows, there is at least Microsoft
KLC<http://www.microsoft.com/downloads/details.aspx?familyid=fb7b3dcd-d4c1-4943-9c74-d8df57ef19d7>.
While the possibilities are inferior, simple key combinations like the one
above are easily achieved.

Is someone interested in a german standard layout with some additional
symbols? (×÷…·—–„“”‚‘’ẞ‽‰)