"First letter" classification filter rules
https://eng.m.fontke.com/help/1/
Why Is There Fonts Name Ends With "***-83pv-RKSJ-H", "***-GBpc-EUC-V" and etc.?
https://eng.m.fontke.com/help/59/
Why Can Not I Find the Font I Want?
https://eng.m.fontke.com/help/63/