AHK Crouch Spam

LButton Left mouse button
RButton Right mouse button
MButton Middle or wheel mouse button
Advanced buttons
XButton1 4th mouse button. Typically performs the same function as Browser_Back.
XButton2 5th mouse button. Typically performs the same function as Browser_Forward.
Wheel
WheelDown Turn the wheel downward (toward you).
WheelUp Turn the wheel upward (away from you).
WheelLeft
WheelRight
[v1.0.48+]: Scroll to the left or right.

Requires Windows Vista or later. These can be used as hotkeys with some (but not all) mice which have a second wheel or support tilting the wheel to either side. In some cases, software bundled with the mouse must instead be used to control this feature. Regardless of the particular mouse, Send and Click can be used to scroll horizontally in programs which support it.

Keyboard
Note: The names of the letter and number keys are the same as that single letter or digit. For example: b is the B key and 5 is the 5 key.

Although any single character can be used as a key name, its meaning (scan code or virtual keycode) depends on the current keyboard layout. Additionally, some special characters may need to be escaped or enclosed in braces, depending on the context. [v1.1.27+]: The letters a-z or A-Z can be used to refer to the corresponding virtual keycodes (usually vk41-vk5A) even if they are not included in the current keyboard layout.

General keys
CapsLock CapsLock (caps lock key)
Space Space (space bar)
Tab Tab (tabulator key)
Enter (or Return) Enter
Escape (or Esc) Esc
Backspace (or BS) Backspace
Cursor control keys
ScrollLock ScrollLock (scroll lock key)
Delete (or Del) Delete
Insert (or Ins) Insert
Home Home
End End
PgUp PageUp (page up key)
PgDn PageDown (page down key)
Up ↑ (up arrow key)
Down ↓ (down arrow key)
Left ← (left arrow key)
Right → (right arrow key)
Numpad keys
Due to system behavior, the following keys seperated by a slash are identified differently depending on whether NumLock is ON or OFF. If NumLock is OFF but Shift is pressed, the system temporarily releases Shift and acts as though NumLock is ON.

Numpad0 / NumpadIns 0 / Insert
Numpad1 / NumpadEnd 1 / End
Numpad2 / NumpadDown 2 / ↓
Numpad3 / NumpadPgDn 3 / PageDown
Numpad4 / NumpadLeft 4 / ←
Numpad5 / NumpadClear 5 / typically does nothing
Numpad6 / NumpadRight 6 / →
Numpad7 / NumpadHome 7 / Home
Numpad8 / NumpadUp 8 / ↑
Numpad9 / NumpadPgUp 9 / PageUp
NumpadDot / NumpadDel . / Delete
NumLock NumLock (number lock key)
NumpadDiv / (division)
NumpadMult * (multiplication)
NumpadAdd + (addition)
NumpadSub - (subtraction)
NumpadEnter Enter
Function keys
F1 - F24 The 12 or more function keys at the top of most keyboards.
Modifier keys
LWin Left Win. Corresponds to the <# hotkey prefix.
RWin
Right Win. Corresponds to the ># hotkey prefix.

Note: Unlike Control/Alt/Shift, there is no generic/neutral "Win" key because the OS does not support it. However, hotkeys with the # modifier can be triggered by either Win key.

Control (or Ctrl) Control. As a hotkey (Control::) it fires upon release unless it has the tilde prefix. Corresponds to the ^ hotkey prefix.
Alt Alt. As a hotkey (Alt::) it fires upon release unless it has the tilde prefix. Corresponds to the ! hotkey prefix.
Shift Shift. As a hotkey (Shift::) it fires upon release unless it has the tilde prefix. Corresponds to the + hotkey prefix.
LControl (or LCtrl) Left Control. Corresponds to the <^ hotkey prefix.
RControl (or RCtrl) Right Control. Corresponds to the >^ hotkey prefix.
LShift Left Shift. Corresponds to the <+ hotkey prefix.
RShift Right Shift. Corresponds to the >+ hotkey prefix.
LAlt Left Alt. Corresponds to the <! hotkey prefix.
RAlt
Right Alt. Corresponds to the >! hotkey prefix.

Note: If your keyboard layout has AltGr instead of RAlt, you can probably use it as a hotkey prefix via <^>! as described here. In addition, LControl & RAlt:: would make AltGr itself into a hotkey.

Multimedia keys
The function assigned to each of the keys listed below can be overridden by modifying the Windows registry. This table shows the default function of each key on most versions of Windows.

Browser_Back Back
Browser_Forward Forward
Browser_Refresh Refresh
Browser_Stop Stop
Browser_Search Search
Browser_Favorites Favorites
Browser_Home Homepage
Volume_Mute Mute the volume
Volume_Down Lower the volume
Volume_Up Increase the volume
Media_Next Next Track
Media_Prev Previous Track
Media_Stop Stop
Media_Play_Pause Play/Pause
Launch_Mail Launch default e-mail program
Launch_Media Launch default media player
Launch_App1 Launch My Computer
Launch_App2 Launch Calculator
Special keys
AppsKey Menu. This is the key that invokes the right-click context menu.
PrintScreen PrintScreen
CtrlBreak Ctrl+Break
Pause Pause
Break Break. Since this is synonymous with Pause, use ^CtrlBreak in hotkeys instead of ^Pause or ^Break.
Help Help. This probably doesn't exist on most keyboards. It's usually not the same as F1.
Sleep Sleep. Note that the sleep key on some keyboards might not work with this.
SCnnn Specify for nnn the scan code of a key. Recognizes unusual keys not mentioned above. See Special Keys for details.
VKnn
Specify for nn the hexadecimal virtual key code of a key. This rarely-used method also prevents certain types of hotkeys from requiring the keyboard hook. For example, the following hotkey does not use the keyboard hook, but as a side-effect it is triggered by pressing either Home or NumpadHome:

^VK24::MsgBox You pressed Home or NumpadHome while holding down Control.
Known limitation: VK hotkeys that are forced to use the keyboard hook, such as *VK24 or ~VK24, will fire for only one of the keys, not both (e.g. NumpadHome but not Home). For more information about the VKnn method, see Special Keys.

Warning: Only Send, GetKeyName, GetKeyVK, GetKeySC and #MenuMaskKey support combining VKnn and SCnnn. [v1.1.27+]: The presence of an invalid suffix prevents VKnn from being recognized. For example, vk1Bsc001:: raises an error in v1.1.27+, but sc001 was ignored (had no effect) in previous versions.