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 ## brainfuck
 
+> Esoteric programming languages (esolang) are designed to test the boundaries of computer programming design, as proofs of concept, as software art, as a hacking interface or simply as a joke. One such esoteric language is `Brainfuck`. It was created by Urban Müller in 1993. It is a minimalist language consisting of 8 simple commands. It is Turing complete, but is not intended for practical use. It exists to amuse and challenge programmers.
+
 ### Instructions
 
 Write a `Brainfuck` interpreter program.
-The source code will be given as first parameter.
-The code will always be valid, with less than 4096 operations.
-`Brainfuck` is a minimalist language. It consists of an array of bytes (in this exercice 2048 bytes) all initialized with zero, and with a pointer to its first byte.
-
-Every operator consists of a single character :
-
-- '>' increment the pointer
-- '<' decrement the pointer
-- '+' increment the pointed byte
-- '-' decrement the pointed byte
-- '.' print the pointed byte on standard output
-- '[' go to the matching ']' if the pointed byte is 0 (loop start)
-- ']' go to the matching '[' if the pointed byte is not 0 (loop end)
+
+The source code will be given as the first parameter, and will always be valid with fewer than 4096 operations.
+
+Your `Brainfuck` interpreter will consist of an array of 2048 bytes, all initialized to 0, with a pointer to the first byte.
+
+Every operator consists of a single character:
+- `>`: increment the pointer.
+- `<`: decrement the pointer.
+- `+`: increment the pointed byte.
+- `-`: decrement the pointed byte.
+- `.`: print the pointed byte to the standard output.
+- `[`: if the pointed byte is 0, then instead of moving onto the next command, skip to the command after the matching `]`.
+- `]`: if the pointed byte is **not** 0, then instead of moving onto the next command, move back to the command after the matching `[`.
 
 Any other character is a comment.