Language aliases: This alias tracks your preferred language(mlang) as well as your preferred language you are learning(llang). You must run mlang/llang to set your languages before it will work.
study: get langbook from all; learnlang; open langbook to page 2; turnpage langbook; turnpage langbook; turnpage langbook; turnpage langbook; close langbook; put langbook in every pack; mainlang;
turnpage: turn page in $*$; read $*$;
mlang: alias mainlang speak $*$
llang: alias learnlang speak $*$