Hello, In an effort to model avionic messages that use the ARINC429 protocol, I am running into an issue with the DFDL attribute "bitOrder", which seems to have no effect. I have prepared and documented the smallest sample I could come up with on github: https://github.com/rchampag/dfdl/tree/master/arinc429-label If anyone could shed some light on this problem, it would be most appreciated. Please keep in mind I am a beginner DFDL user. Thanks in advance! Sincerely, Roger -------------------------------------------------------------- Roger Champagne, P.Eng., Ph. D. Professeur agrégé, Département de génie logiciel et des TI Associate Professor, Department of Software and IT Engineering École de technologie supérieure 1100, rue Notre-Dame Ouest, Montréal, Québec, H3C 1K3, Canada Bureau / Office : A-4499 Téléphone / Phone : +1 514 396 8825 -- Télécopieur / Fax : +1 514 396 8405 Web: http://etsmtl.ca/Professeurs/rchampagne