N6CTA suggests this format for beacons (via Matrix):
=3405.20N/11748.25WB-0/R -1/B -4/C -5/IRC -7/N DM14cc FARPN
This bit is an uncompressed APRS compatible location and APRS icon for a BBS (N6CTA, Matrix).
The “!” and “=” at the front have different meanings as well, per the spec, whether or not you can receive APRS messages (VE3QBZ, Matrix).
=3405.20N/11748.25WB
This bit is more or less standard. The rest tells you what SSIDs lead to a particular service (N6CTA, Matrix).
0/R -1/B -4/C -5/IRC -7/N DM14cc FARPN