languagesystem DFLT dflt;
languagesystem latn dflt;
languagesystem grek dflt;
lookup ALT {
sub space by exclam;
} ALT;
lookup KERN {
pos space exclam -10;
} KERN;
conditionset heavy {
wght 600 900;
} heavy;
variation rvrn heavy {
script DFLT;
lookup ALT;
script latn;
lookup ALT;
} rvrn;
feature kern {
lookup KERN;
} kern;