PUSH [constant_value]: Push the constant on the stack
POP [number]: Pop a certain numbers of variables from the stack
DUP: Duplicate the top of the stack
SWAP: Swap the first two items on the stack

MAKE_REF [varname]: Create a reference to a value/cell in an environment
STORE: Store a value in an environment
DCL_CELL [varname]: Declare a cell in an environment
DEF_VALUE [varname]: Define a value in an environment
ENV: Push the current environment on the stack
NEW_ENV: Create an environment and set it as the current environement
DROP_ENV: Drop the current environment

JMP [idx]: Jump to execute instruction at the given index
IFJMP [idx]: Pop the value and if true jump to [idx]
UNLESSJMP [idx]: Pop the value and if false jump to [idx]

CALL [arguments]: Pop the function object and call it with the given number of arguments
RET: Return
MAKE_FUNC [#args]: Create a new function from the arguments name on the stack and the bytecode

TRY_PUSH [idx]: Indicates the begining of an exception block, idx correspond to the instruction number where to jump if an exception occurs
TRY_POP: Indicates the end of the exception block
THROW: Throw the exception object from the top of the stack