Horrlang is an esoteric language, you should not try it.

In Horrlang, memory and instruction are mixed, so you can use old instruction
as new memory places or do some metaprogramation rewriting your code as it run.

Just like in LISP but ... without lists ... good luck ...

So in Horrlang you have basically 2 pointers, a memory one and an instruction
one. Both starts at 0. The instruction one follow instructions that can move
the memory pointer, look at instruction set :

Instruction set :

Lx : Move memory head left x chars (defaults to 1)
Rx : Move memory head right x chars (defaults to 1)

Nx : Goto the next char that is x
Px : Goto the prev char that is x
O  : Output current value under memory head
I  : Read from stdin to the current memory head location
K  : Decrement current memory location
H  : Increment current memory location
Jx : Jump to prev char X if current memory location != 0

The Hello World :
R9R9R9R4OROROROROROROROROROROROHello World.

Writing a serie of P should like :
R5OP5P or R3OP3

Write 123456789 using a loop :
R9R3:ROHLKJ:81