Copyright headers

In most files (covered by the GNU GPL) use the following copyright header:

Replacing:

• <YOUR NAME> with your name.
• <CREATED YEAR> the year the file was created
• <LAST UPDATED YEAR>when the file was last updated. For new files this can be missing. E.g. a file created in 2017 might have #Copyright (C) 2017

# A part of NonVisual Desktop Access (NVDA)
# Copyright (C) <CREATED YEAR>-<LAST UPDATED YEAR> NV Access Limited, <YOUR NAME>
# This file may be used under the terms of the GNU General Public License, version 2 or later.
# For more details see: https://www.gnu.org/licenses/gpl-2.0.html

Some files are covered by the GNU LGPL, for example the the controller client, and the examples. This allows someone to use them (or parts of them) as-is. In this case use the following header:

# A part of NonVisual Desktop Access (NVDA)
# Copyright (C) <CREATED YEAR>-<LAST UPDATED YEAR> NV Access Limited, <YOUR NAME>
# This file may be used under the terms of the GNU Lesser General Public License, version 2.1.
# For more details see: https://www.gnu.org/licenses/lgpl-2.1.html

In some files an older style of referring to the contributors is used. The contributors is not a list of names and may just say something like: Copyright (C) 2006-2016 NVDA Contributors. We are in the process of trying to convert these to the new style of explicit contributors. That process is a bit tricky. You have to use the git logs to figure out when the file was created and who touched it and then build a copyright line accordingly.

Note: We decided to remove the filename comment from the top of the file, since it doesn't really add anything, and is a source of error on file rename / copying copyright headers between files.