Get-Command -pssnapin

I have a easy question (i suppose) but i can find the answer…

if i run the Get-Command and the - with tab i don’t find the option pssnapin from the list… why? how cab i know all the option that i can use ?

thank you a lot and best regards

PSsnapin is an alias of the -Module parameter - see the online help at

thank you a lot for the answer!