SendKeys

[void] [System.Reflection.Assembly]::LoadWithPartialName("'Microsoft.VisualBasic")
#[Microsoft.VisualBasic.Interaction]::AppActivate("Test.ps1 - Notepad")

[void] [System.Reflection.Assembly]::LoadWithPartialName("'System.Windows.Forms")

Start-Sleep -s 5
[System.Windows.Forms.SendKeys]::SendWait("Hello")

Start-Sleep -m 1000
[System.Windows.Forms.SendKeys]::SendWait("^o")

Start-Sleep -s 10
[System.Windows.Forms.SendKeys]::SendWait("{F1}")

<#

SHIFT
+

CTRL
^

ALT
%

BACKSPACE
{BACKSPACE}, {BS}, or {BKSP}

BREAK
{BREAK}

CAPS LOCK
{CAPSLOCK}

DEL or DELETE
{DELETE} or {DEL}

DOWN ARROW
{DOWN}

END
{END}

ENTER
{ENTER}or ~

ESC
{ESC}

HELP
{HELP}

HOME
{HOME}

INS or INSERT
{INSERT} or {INS}

LEFT ARROW
{LEFT}

NUM LOCK
{NUMLOCK}

PAGE DOWN
{PGDN}

PAGE UP
{PGUP}

RIGHT ARROW
{RIGHT}

SCROLL LOCK
{SCROLLLOCK}

TAB
{TAB}

UP ARROW
{UP}

F1
{F1}

Keypad add
{ADD}

Keypad subtract
{SUBTRACT}

Keypad multiply
{MULTIPLY}

Keypad divide
{DIVIDE}
#>