From Opera 15 onward, Opera 11 & 12’s extension format is no longer supported, and instead, we’ve switched to Chromium’s extension model. Check out our new documentation for developing extensions for Opera 15 and higher and start building your own extensions.
<license> element mentions the software license. The following attributes are associated with it.
href: Specifies a URL for accessing the software license
The following is an example of licensing an extension under version 2 of the Apache license.
<?xml version="1.0" encoding="utf-8"?> <widget xmlns="http://www.w3.org/ns/widgets" id="http://example.com/myExtension" version="1.0"> ... <license href="http://www.apache.org/licenses/LICENSE-2.0"> Copyright 2011 Erik the Viking Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. </license> ... </widget>
This article is licensed under a Creative Commons Attribution 3.0 Unported license.