Editing Environment variable (section)

==== Default values ====
The following tables shows typical default values of certain environment variables under English versions of Windows as they can be retrieved under <code>[[CMD (Windows)|CMD]]</code>.

(Some of these variables are also defined when running <code>COMMAND.COM</code> under Windows, but differ in certain important details: Under <code>COMMAND.COM</code>, the names of environment variable are always uppercased. Some, but not all variables contain short [[8.3 filename|8.3]] rather than [[long file name]]s. While some variables present in the <code>CMD</code> environment are missing, there are also some variables specific to the <code>COMMAND</code> environment.)
{| class="wikitable"
|-
! Variable
! Locale specific
! Windows XP (CMD)
! Windows Vista and later (CMD)
|- 
| {{mono|%ALLUSERSPROFILE%}}<ref name="Schulz_2014_Ordner"/>
| {{Yes}}
| {{mono|C:\Documents and Settings\All Users}}
| {{mono|C:\ProgramData}}<ref name="Schulz_2014_Ordner"/>
|- 
| {{mono|%APPDATA%}}<ref name="Schulz_2014_Ordner"/>
| {{Yes}}
| {{mono|C:\Documents and Settings\%USERNAME%\Application Data}}
| {{mono|C:\Users\%USERNAME%\AppData\Roaming}}<ref name="Schulz_2014_Ordner"/>
|- 
| {{mono|%CommonProgramFiles%}}<ref name="Schulz_2014_Ordner"/>
| {{Yes}}
| {{mono|C:\Program Files\Common Files}}
| {{mono|C:\Program Files\Common Files}}<ref name="Schulz_2014_Ordner"/>
|- 
| {{mono|%CommonProgramFiles(x86)%}}<ref name="Schulz_2014_Ordner"/>
| {{Yes}}
| {{mono|C:\Program Files (x86)\Common Files}} ''(only in 64-bit version)''
| {{mono|C:\Program Files (x86)\Common Files}} ''(only in 64-bit version)''<ref name="Schulz_2014_Ordner"/>
|- 
| {{mono|%CommonProgramW6432%}}<ref name="Schulz_2014_Ordner"/>
| {{Yes}}
| {{mono|%CommonProgramW6432%}} ''(not supported, not replaced by any value)''
| {{mono|C:\Program Files\Common Files}} ''(only in 64-bit version)''<ref name="Schulz_2014_Ordner"/>
|- 
| {{mono|%COMPUTERNAME%}}
| {{No}}
| {computername}
| {computername}
|- 
| {{mono|%ComSpec%}}
| {{No}}
| {{mono|C:\Windows\System32\cmd.exe}}
| {{mono|C:\Windows\System32\cmd.exe}}
|- {{anchor|%HOMEDRIVE%}}
| {{mono|%HOMEDRIVE%}}<ref name="Schulz_2014_Ordner"/>
| {{No}}
| C:
| C:<ref name="Schulz_2014_Ordner"/>
|- {{anchor|%HOMEPATH%}}
| {{mono|%HOMEPATH%}}<ref name="Schulz_2014_Ordner"/>
| {{Yes}}
| {{mono|\Documents and Settings\%USERNAME%}}
| {{mono|\Users\%USERNAME%}}<ref name="Schulz_2014_Ordner"/>
|- 
| {{mono|%LOCALAPPDATA%}}<ref name="Schulz_2014_Ordner"/>
| {{Yes}}
| {{mono|%LOCALAPPDATA%}} ''(not supported, not replaced by any value)''
| {{mono|C:\Users\%USERNAME%\AppData\Local}}<ref name="Schulz_2014_Ordner"/>
|- 
| {{mono|%LOGONSERVER%}}
| {{No}}
| {{mono|\\{domain_logon_server} }}
| {{mono|\\{domain_logon_server} }}
|- 
| {{mono|%PATH%}}
| {{Yes}}
| {{mono|C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;{plus program paths} }}
| {{mono|C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;{plus program paths} }}
|- 
| {{mono|%PATHEXT%}}
| {{No}}
| .COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.WSF;.WSH
| .com;.exe;.bat;.cmd;.vbs;.vbe;.js;.jse;.wsf;.wsh;.msc
|- 
| {{mono|%ProgramData%}}<ref name="Schulz_2014_Ordner"/>
| {{Yes}}
| {{mono|%ProgramData%}} ''(not supported, not replaced by any value)''
| {{mono|%SystemDrive%\ProgramData}}<ref name="Schulz_2014_Ordner"/>
|- 
| {{mono|%ProgramFiles%}}<ref name="Schulz_2014_Ordner"/>
| {{Yes}}
| {{mono|%SystemDrive%\Program Files}}
| {{mono|%SystemDrive%\Program Files}}<ref name="Schulz_2014_Ordner"/>
|- 
| {{mono|%ProgramFiles(x86)%}}<ref name="Schulz_2014_Ordner"/>
| {{Yes}}
| {{mono|%SystemDrive%\Program Files (x86)}} ''(only in 64-bit version)''
| {{mono|%SystemDrive%\Program Files (x86)}} ''(only in 64-bit version)''<ref name="Schulz_2014_Ordner"/>
|- 
| {{mono|%ProgramW6432%}}<ref name="Schulz_2014_Ordner"/>
| {{Yes}}
| {{mono|%ProgramW6432%}} ''(not supported, not replaced by any value)''
| {{mono|%SystemDrive%\Program Files}} ''(only in 64-bit version)''<ref name="Schulz_2014_Ordner"/>
|- 
| {{mono|%PROMPT%}}
| {{No}}
| Code for current command prompt format, usually {{code|$P$G}}
| Code for current command prompt format, usually {{code|$P$G}}
|- 
| {{mono|%PSModulePath%}}
|
| {{mono|%PSModulePath%}} ''(not supported, not replaced by any value)''
| {{mono|%SystemRoot%\system32\WindowsPowerShell\v1.0\Modules\}}
|- 
| {{mono|%PUBLIC%}}<ref name="Schulz_2014_Ordner"/>
| {{Yes}}
| {{mono|%PUBLIC%}} ''(not supported, not replaced by any value)''
| {{mono|%SystemDrive%\Users\Public}}<ref name="Schulz_2014_Ordner"/>
|- 
| {{mono|%SystemDrive%}}<ref name="Schulz_2014_Ordner"/>
| {{No}}
| C:
| C:<ref name="Schulz_2014_Ordner"/>
|- 
| {{mono|%SystemRoot%}}<ref name="Schulz_2014_Ordner"/>
| {{No}}
| The Windows directory, usually {{mono|C:\Windows}}, formerly {{mono|C:\WINNT}}
| {{mono|%SystemDrive%\Windows}}<ref name="Schulz_2014_Ordner"/>
|- 
| {{mono|%TEMP%}}<ref name="Schulz_2014_Ordner"/> and {{mono|%TMP%}}<ref name="Schulz_2014_Ordner"/>
| {{Yes}}
| {{mono|%SystemDrive%\Documents and Settings\%USERNAME%\Local Settings\Temp}}
| {{mono|%SystemRoot%\TEMP}} (for system environment variables {{mono|%TMP%}} and {{mono|%TEMP%}}),<br/>{{mono|%USERPROFILE%\AppData\Local\Temp}}<ref name="Schulz_2014_Ordner"/> (for user environment variables {{mono|%TMP%}} and {{mono|%TEMP%}})
|- 
| {{mono|%USERDOMAIN%}}
| {{No}}
| {userdomain}
| {userdomain}
|- 
| {{mono|%USERNAME%}}
| {{No}}
| {USERNAME}
| {USERNAME}
|- 
| {{mono|%USERPROFILE%}}<ref name="Schulz_2014_Ordner"/>
| {{Yes}}
| {{mono|%SystemDrive%\Documents and Settings\%USERNAME% }}
| {{mono|%SystemDrive%\Users\%USERNAME% }}<ref name="Schulz_2014_Ordner"/>
|- 
| {{mono|%windir%}}<ref name="Schulz_2014_Ordner"/>
| {{No}}
| {{mono|%SystemDrive%\WINDOWS}}
| {{mono|%SystemDrive%\Windows}}<ref name="Schulz_2014_Ordner"/>
|}

In this list, there is no environment variable that refers to the location of the user's ''My Documents'' directory, so there is no standard method for setting a program's home directory to be the ''My Documents'' directory.