Param( [String]$Arg1, #$Arg1は文字列型, [Int]$Arg2 #$Arg2は整数型で宣言 )
Param( [String]$Arg1 = "Test1", [Int]$Arg2 = 123 )
Param( [parameter(mandatory=$true)][String]$Arg1, [parameter(mandatory=$true)][int]$Arg2 )
Param( [ValidateSet("Test1","Test2")][String]$Arg1, [ValidateSet("123","321")][int]$Arg2 )