[OSM-newbies] Peak Symbols in Osmarender - contours in Cycle Map

[David]

Good  evening,

I looked - with Osmarender - at a mountain area:

http://www.openstreetmap.org/?lat=47.2764&lon=9.3231&zoom=12&layers=0B00FTF

I found that the peak symbols (triangle) are of different size:

The one of the Säntis is smaller than the one of the Kronberg. Where
does this come from?

Should the symbol of the Säntis be bigger than the one of the Kronberg,
or should they be equal? (Säntis is higher and bigger).

My other question is: In the Cycle map there are contours (lines of
equal altitude). Which way do they come into the OpenStreetMap project?

David