I read that in 1996 the German language underwent an orthography reform: http://en.wikipedia.org/wiki/German_orthography_reform_of_1996 Wikipedia says that the rules were compulsorily taught in ...
Neue Rechtschreibung changed numerieren to nummerieren. This is not optional, so numerieren is incorrect now. How come numerisch did not change?
I see people discussing Neue Rechtschreibung versus Alte Rechtschreibung. What is the difference? What has changed in German orthography since the 1996 Rechtschreibreform?