The JAM Message Base Format; part of my history.. :-)

“The JAM Message Base Format was the most popular file format for storing message bases on DOS-based BBSes in the 1990s. JAM stands for “Joaquim-Andrew-Mats” after the original authors of the API Joaquim Homrighausen, Andrew Milner, Mats Birch, and Mats Wallin. Joaquim was the author of FrontDoor, a DOS based FidoNet compatible Mailer. Andrew was the author of RemoteAccess, a popular DOS based Bulletin Board System. JAM was originally released in 1993 in C, however the most popular implementation was Mark May’s “MK Source for Msg Access” written in Pascal which also saw its initial released in 1993.”

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