This inheritance list is sorted roughly, but not completely, alphabetically:

[detail level 12]

CArgsHandler	Consumes the arguments passed to brain and do whatever actions it's supposed to
CArgsOptions	This class handles all the options passed as arguments to Brain. It does so by using an enum of all options accepted by Brain and an integer which stores by bitwise comparation the values of options used at the moment of execution
CASTInfo	The abstract syntax tree
CBootstrap	Class that starts Brain, it has all the needed components to initialize the Brain interpreter
▼CExpr	Abstract class in which all expressions in Brain implement from
CArithmeticExpr	Represents the three arithmetic operations that you can use and abuse in Brain
CBreakExpr	Class that represents the break operator in Brain
CDebugExpr	Class that represents the debug operator in Brain
CFloatExpr	Behaves just like the output expression, but it instead of print an integer number it will use io.c to divide the number by 100 and print it
CIfExpr	Class that represents the if operator in Brain
CIncrementExpr	Class that represent the increment operator in Brain
CInputExpr	Represents the input operator in Brain, aka as: . It calls b_getchar of io.c to interpret input
CLoopExpr	Class that represents the loop operator in Brain
COutputExpr	Class that represents the output operator in Brain
CShiftExpr	Class that represents the shift operator in Brain
CParser	The parser of the Brain language, it interpretes .b, .br or *.brain files