Disassemblers can show the code tree, but the analyst can verify which branch the code flows to by using a debugger. A debugger does actual execution per line of code. The analyst can trace through codes such as loops, conditional statements, and API execution. Since debuggers are categorized under dynamic analysis and perform a step-wise execution of code, debugging is done in an enclosed environment. Various file types have different disassemblers. In a .NET compiled executable, it is best to instead disassemble the p-code and work out what each operator means.