RiverLang

RiverLang is a two dimensional esoteric programming language made for "Esoteric Hello World! Jam 2017" .  The language contains the following directives (so far)

• ">" - flow right - feeds the currently stored value right
• "<" - flow left - feeds the currently stored value left
• "^" - flow up - feeds the currently stored value up
• "v" - flow down - feeds the currently stored value down
• "@" - split stream - splits the incoming flow into all outbound flows
• "+" - increment - increments value by one, preserves stream direction
• "-" - decrement - decrements value by one, preserves stream direction
• "*" - double - multiplies value by two, preserves stream direction
• "%" - cut - divides value by two, preserves stream direction
• "#" - number out - outputs value as a number, ends stream
• "&" - char out - outputs value as a character according to it's ASCII value, ends stream

IT IS VERY IMPORTANT THAT YOU USE A MONO-SPACE FONT

An example program that prints "hello"