this is a fucntional outbound packet sniffer. It requires MQ2PacketManager be loaded.

/sniff
this will toggle sniffing
/data
this will toggle display of the packet infomration
/mask <opcode>
this will make only certain opcodes be displayed. Meaning /mask 14cb will make only location packets be displayed. /mask with no operand will turn this off.
/dump
this will dump the raw hex data of a packet that hasn't had managment coded yet. Please contact me if you would like a specific packet handled that isnt already.

So...what does this do? I mean, I can read what the description says but...what would this be used for?

Not much now days honestly, at least not from a player perspective. It’s more of a diagnostic tool so you could view the raw data the client is sending to the server. I haven’t ported it to the contemporary clients cause it’s not useful for players, more of a dev, serverop type thing.