EnVar plugin for NSIS
Coded by Jason Ross aka JasonFriday13 on the forums.
Copyright (C) 2014-2016, 2018, 2020-2021 MouseHelmet Software
EULA - End User License Agreement
This software is provided 'as-is', without any express or implied warranty.
In no event will the author be held liable for
any damages arising from the use of this software. 
Permission is granted to anyone to use this software for any purpose, including
commercial applications, and to alter it
and redistribute it freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; 
you must not claim that you wrote the original software. 
If you use this software in a product, an acknowledgment in the product documentation
would be appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be misrepresented
as being the original software.
3. This notice may not be removed or altered from any source distribution.