Changes

You have to define "definefontfallback"

* [http://pmrb.free.fr/contextref.pdf#[145,{%22name%22:%22Fit%22}] in the whole manual]

* [http://context.aanhet.net/svn/contextman/context-reference/en/co-fonts.pdf#[3,{%22name%22:%22Fit%22}] as a separate document] section "Simple font definitions"

== I want use specific features ==