OIFE’s governing documents when we were registered in the Netherlands (1993-2022) were originally written in Dutch, but in our day to day business we used the English versions. We also had a set of bylaws in English, which complimented the Dutch and English Statutes.
After becoming formally registered in Belgium, we only have a set of Statutes (not bylaws). The original language version is Dutch and the unofficial language version is in English. Both were approved by the founding members on March 8th 2022.

Photo from the establishment of OIFE in Northampton, UK 1993