
The name of the license the MOD is released under, along with a URL to the full text of that license. We recommend submitting under GPL v2. Submitting MODs under GPL v3 is not allowed because phpBB3 is released under GPL v2 only and GPL v3 is not compatible with v2. You are allowed to submit it under some other license under condition that it is compatible with GPL v2. Be sure to change the license within the textbox and include a copy of the license in license.txt.