does anyone know where the documentation for the below settings in bold/underlined can be found at? I checked the v3 documentation, but could not find the section that covers the bridge commands.

/interface bridge port
add bridge=bridge1 comment="" disabled=no edge=auto external-fdb=auto \
horizon=none interface=ether1 path-cost=10 point-to-point=auto \
priority=0x80

Yes, it will be very nice if someone of the mikrotik staff could clarify this parameters settings.
We use mikrotik mostly in ptp link and this seems to be important for this type of configuration.