Byte
{Number} ::= ['0'..'255']
Statement ::= ';' Instruction
| '+' Instruction Statement
| '-' Instruction Statement
| ':' Number
Instruction ::= Number
| Number ValArgument
| Number VarArgument
ValArgument ::= '.' Number
VarArgument ::= ',' Number
Instructions:
0 Halt
1 Restart
2 Unconditional jump
3 Conditional jump (true)
4 Conditional jump (false)
5 Open variable for reading/writing
6 Set open variable value
7 Set array begin
8 Set array length
9 Open file for reading
10 Open file for writing
11 Input char
12 Output char
13 Read char from file
14 Write char to file