ENVIRON

ENVIRON({envstring | number})

Returns information about the current operating system environment (String).

envstring	The name of an environment variable (String).
number	The number of the position in the environment-string table (Long).

REMARKS

* The number argument can be any numeric expression, but is rounded to a whole number before it is evaluated.
* If there is no environment string in the corresponding position, then a zero length ("") is returned.
* You can use the ENVIRON$ function to return a String data type instead of a Variant data type.
* Calling Environ("Path") removes duplicates on Office 365 but on Office 2016 duplicates are not removed.
* This function is not available on the Macintosh.
* The equivalent .NET function is Microsoft.VisualBasic.Interaction.Environ
* For the Microsoft documentation refer to learn.microsoft.com

Environ(1) = "prompt" 
Environ(2) = "temp" 
Environ(3) = 
Environ("AppData") - "C:\Users\ 'user name' \AppData\Roaming" 
Environ("ClientName") 
Environ("ComputerName") 
Environ("HomeDrive") = "C" 
Environ("HomePath") = "\Documents and Settings\ 'user name' " 
Environ("Logon Server") 
Environ("Path") 
Environ("ProcessorRevision") - ?? 
Environ("SessionName") 
Environ("UserDomain") 
Environ("UserName") = "user name" 
Environ("UserProfile") = "C:\Documents and Settings\ 'user name' "