Ark

Ark: The esolang that is actually kind of useful.

Usage
Character	Function	Status
:	Terminates the program.	Required
@	Initializes the program.	Required
!	Outputs the next Alphanumeric character in the code.	Output
^	Outputs the stack;	Output
>	Adds the next numeric character to the stack;	Stack Manipulation
<	Asks for input and adds it to the stack.	Input/Stack Manipulation
+	Add the top two rows in the stack and add the result to the stack;	Math/Stack Manipulation
-	Subtract the second row by the top row in the stack and add the result to the stack.	Math/Stack Manipulation
*	Multiply the top two rows of the stack and add the result to the stack.	Math/Stack Manipulation
/	Divide the top row by the second row in the stack and add the result to the stack.	Math/Stack Manipulation
#	Clear the stack.	Stack Manipulation
{	Used to initialize a function. (like python's: "def")	Functions
}	Used to end the initialization of a function.	Functions
[	Used to initialize a multiple-character addition.	Stack Manipulation
]	Used to end the initialization of a multiple-character addition.	Stack Manipulation
~	Used to call a function.	Functions

note: when printing a string like this: !B !L !A !H, you must put a space in between each instruction.