Usage:			dotNetFx40_Full_x86_x64intl_Slim.exe [switches]
			All switches are optional.

/y - Passive mode, shows progress bar advancing but requires no user interaction. *Full* Client and Extended packages are installed.
/ai - Passive mode, shows progress bar advancing but requires no user interaction. *Only* Client package is installed.
/aif - Quiet mode, no user input required or output shown. *Full* Client and Extended packages are installed.
/aic - Quiet mode, no user input required or output shown. *Only* Client package is installed.
/ain - Quiet mode, no user input required or output shown. *Full* Client and Extended packages are installed and 'ngen executequeueditems' is also run. (Fixes slow XP boot, may take considerably *longer*)
/sfxlang: - Language mode. Change default display language and/or language pack.
/h | /? - Display this help.

Examples:

Automatically install Client + Extended packages and display progress:
dotNetFx40_Full_x86_x64intl_Slim.exe /y
Automatically install Client package and display progress:
dotNetFx40_Full_x86_x64intl_Slim.exe /ai
Silently install Client + Extended packages and display no progress:
dotNetFx40_Full_x86_x64intl_Slim.exe /aif
Silently install Client package and display no progress:
dotNetFx40_Full_x86_x64intl_Slim.exe /aic
Silently install Client + Extended packages, execute ngen and display no progress:
dotNetFx40_Full_x86_x64intl_Slim.exe /ain

Optional command line switch to disable extraction dialog: /gm2
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