1# OpenType Feature File specification, section 6.d, example 1: 2# [GPOS LookupType 4] Mark-to-Base attachment positioning 3# http://www.adobe.com/devnet/opentype/afdko/topic_feature_file_syntax.html 4 5languagesystem DFLT dflt; 6 7markClass [acute grave] <anchor 150 -10> @TOP_MARKS; 8markClass [dieresis umlaut] <anchor 300 -10> @TOP_MARKS; 9markClass [cedilla] <anchor 300 600> @BOTTOM_MARKS; 10 11feature test { 12 pos base [e o] <anchor 250 450> mark @TOP_MARKS <anchor 250 -12> mark @BOTTOM_MARKS; 13#test-fea2fea: pos base [a u] <anchor 265 450> mark @TOP_MARKS <anchor 250 -10> mark @BOTTOM_MARKS; 14 position base [a u] <anchor 265 450> mark @TOP_MARKS <anchor 250-10> mark @BOTTOM_MARKS; 15} test; 16