| Variable | Description |
|---|---|
| AdminUser | Installing user has Administrator privileges |
| BorderSide | Width of window borders in pixels |
| BorderTop | Height of window borders in pixels |
| CaptionHeight | Height of window captions in pixels |
| ColorBits | Color depth of display in bits/pixel |
| COMPANYNAME | Name of the installing company |
| ComputerName | Computer network name |
| ComSpec | Command processor path |
| Date | Current date as string |
| Intel | Intel CPU level |
| Intel64 | Intel/64 CPU level, if present |
| LogonUser | Name of the installing user |
| MsiAMD64 | AMD/64 CPU level, if present |
| MsiNetAssemblySupport | Target system supports .Net runtime assemblies |
| MsiNTProductType | Windows NT/2000/XP/2003/Vista product type |
| MsiNTSuiteBackOffice | BackOffice is installed |
| MsiNTSuiteDataCenter | DataCenter is installed |
| MsiNTSuiteEnterprise | A Windows Server edition is installed |
| MsiNTSuitePersonal | Running on Windows XP Home edition |
| MsiNTSuiteSmallBusiness | Small Business Server is installed |
| MsiNTSuiteSmallBusinessRestricted | Restricted Small Business Server is installed |
| MsiNTSuiteWebServer | Running on Windows Web edition |
| MsiWin32AssemblySupport | Target system supports Win32 assemblies |
| Msix64 | x64 CPU level, if present |
| PhysicalMemory | Size of physical memory in MB |
| PrimaryVolumePath | Volume containing the primary installation folder |
| PrimaryVolumeSpaceAvailable | Available disk space on primary installation volume |
| PrimaryVolumeSpaceRemaining | Remaining disk space on primary installation volume |
| PrimaryVolumeSpaceRequired | Required disk space on primary installation volume |
| Privileged | Installing user has elevated privileges |
| RedirectedDllSupport | Target system supports isolated components |
| RegOrganization | Name of the registered organization |
| RegOwner | Name of the registered user |
| RemoteAdminTS | Target system is configured for Remote Administration |
| ScreenX | Width of display in pixels |
| ScreenY | Height of display in pixels |
| ServicePackLevel | Service pack level of target system |
| ServicePackLevelMinor | Minor service pack level of target system |
| SharedWindows | Running on Shared Windows |
| ShellAdvtSupport | Target system supports IShellLink-based advertising |
| SystemLanguageID | Language ID of the default system language (decimal) |
| TerminalServer | Target system is running Terminal Server |
| TextHeight | Text height in logical units |
| Time | Current time as string |
| TTCSupport | Target system supports TrueType Collections |
| USERNAME | Name of the installing user |
| UserSID | Security identifier of installing user |
| Version9X | Windows 9x version number |
| VersionCLR | .Net version number |
| VersionIE | Internet Explorer version number |
| VersionMDAC | MDAC version number |
| VersionMsi | MSI version number |
| VersionNT | Windows NT version number |
| VersionNT64 | Windows NT/64 version number |
| VersionTin | Tarma Installer version number |
| VirtualMemory | Size of virtual memory in MB |
| WindowsBuild | Windows build number |
| XCopy | XCopy command line utility |