We are glad to announce, that fine OpenType features of JL-types' fonts are now available also on Linux version of LibreOffice 4.1.
This means that you can use SujuvaOT school fonts and barcode fonts ViisasEAN and CleverInterleaved also with Linux version of LibreOffice Writer and Calc.
Now you have access on OpenType features on all major operation systems: Windows, Mac OS X and Linux.