How to find out font does not have international support
OS X claims itself Unicode supporting system - that is true however only a minor portion of native or preinstalled fonts support CE accented characters such as ľĺščťďžýáíéŕňäúô.
The question is: how can I find out which font has international support and which doesn't?
The problem is, that when you use font without CE support, it replaces problematic characters with the closes match (e.g. instead of Geneva you will get Arial for certain CE characters). This is sometimes very hard to spot and you often find this out in prints where every now and then a single character is printed in different font/size or missing altogether. And attempt to print document usually escalates the problem.
Windows supports CE and many other alphabets in its standard English distribution with ALL its core fonts. It is a SHAME that Apple plainly ignores half of the planet for so many years (I understand, however, that half of the planet does not equal half of the market.).