it's actually the other way round. interslavic is deliberately based on osl [0]. it is basically "modernized" osl with simplified grammar and lexicon "average

it's actually the other way round. interslavic is deliberately based on osl [0]. it is basically "modernized" osl with simplified grammar and lexicon "averaged" from the existing slavic languages. and, btw, osl is no way the "common root", it's absolutely not proto-slavic, just old bulgarian (from the 9th century) which happened to be the orthodox church liturgical language and thus had very significant influence on many slavic languages. [0] http://steen.free.fr/interslavic/ http://steen.free.fr/interslavic/