# Command syntax
BadUsb app uses extended Duckyscript syntax. It is compatible with classic USB Rubber Ducky 1.0 scripts, but provides some additional commands and features, such as custom USB ID, ALT+Numpad input method, SYSRQ command and more functional keys.
# Script file format
BadUsb app can execute only text scrips from .txt files, no compilation is required. Both `\n` and `\r\n` line endings are supported. Empty lines are allowed. You can use spaces ore tabs for line indentation.
# Command set
## Comment line
Just a single comment line. All text after REM command will be ignored by interpreter
|Command|Parameters|Notes|
|-|-|-|
|REM|Comment text||

## Delay
Pause script execution by defined time
|Command|Parameters|Notes|
|-|-|-|
|DELAY|Delay value in ms|Single delay|
|DEFAULT_DELAY|Delay value in ms|Add delay before every next command|
|DEFAULTDELAY|Delay value in ms|Same as DEFAULT_DELAY|

## Special keys
|Command|Notes|
|-|-|
|DOWNARROW / DOWN||
|LEFTARROW / LEFT||
|RIGHTARROW / RIGHT||
|UPARROW / UP||
|ENTER||
|DELETE||
|BACKSPACE||
|END||
|HOME||
|ESCAPE / ESC||
|INSERT||
|PAGEUP||
|PAGEDOWN||
|CAPSLOCK||
|NUMLOCK||
|SCROLLLOCK||
|PRINTSCREEN||
|BREAK|Pause/Break key|
|PAUSE|Pause/Break key|
|SPACE||
|TAB||
|MENU|Context menu key|
|APP|Same as MENU|
|Fx|F1-F12 keys|

## Modifier keys
Can be combined with special key command or single character
|Command|Notes|
|-|-|
|CONTROL / CTRL||
|SHIFT||
|ALT||
|WINDOWS / GUI||
|CTRL-ALT|CTRL+ALT|
|CTRL-SHIFT|CTRL+SHIFT|
|ALT-SHIFT|ALT+SHIFT|
|ALT-GUI|ALT+WIN|
|GUI-SHIFT|WIN+SHIFT|
## String
|Command|Parameters|Notes|
|-|-|-|
|STRING|Text string|Print text string|
## Repeat
|Command|Parameters|Notes|
|-|-|-|
|REPEAT|Number of additional repeats|Repeat previous command|
## ALT+Numpad input
On Windows and some Linux systems you can print character by pressing ALT key and entering its code on numpad
|Command|Parameters|Notes|
|-|-|-|
|ALTCHAR|Character code|Print single character|
|ALTSTRING|Text string|Print text string using ALT+Numpad method|
|ALTCODE|Text string|Same as ALTSTRING, presents in some Duckyscript implementations|
## SysRq
Send [SysRq command](https://en.wikipedia.org/wiki/Magic_SysRq_key)
|Command|Parameters|Notes|
|-|-|-|
|SYSRQ|Single character||
## USB device ID
You can set custom ID of Flipper USB HID device. ID command should be in the **first line** of script, it is executed before script run.

|Command|Parameters|Notes|
|-|-|-|
|ID|VID:PID Manufacturer:Product||

Example:
`ID 1234:abcd Flipper Devices:Flipper Zero`

VID and PID are hex codes and are mandatory, Manufacturer and Product are text strings and are optional.

