Just saw this on the ISBoxer forum - copying it here (my embiggening) as I don't see it posted...

http://isboxer.com/forum/viewtopic.php?f=41&t=3609


Anet's Official Stance on Multiboxing Updated

As part of ArenaNet’s policy on third-party programs, we are often asked about multi-boxing and the use of macros. Here is our policy:
Macros
Guild Wars 2 players are permitted to use macros as long as the macros are programmed with a 1 key for 1 function protocol.
This means that if you program a macro, it must require one keystroke per action. You may not program a single key to perform multiple functions.
For example, if you Press A and it results in the casting of a single skill, you’re ok. If you Press A and it casts multiple spells, you’re not ok.
You cannot program a macro to perform the same or multiple actions on more than one account at a time.
You cannot program an “auto-clicker” macro that, for instance, opens chests while you play elsewhere.
Dual- or Multi-Boxing
You may use more than one account at the same time.
You may use more than one computer at the same time.
You must be actively playing on each account.
And as stated above, you may not program your keyboard to perform functions on more than one account at a time.
a. For example, if you press W on your keyboard to move forward, a single character on a single account should move forward. The keystroke or mouse click should not perform functions on more than one account.



https://forum-en.guildwars2.com/forum/s ... post354869

Usage of ISBoxer isn't allowed under the updated policy.