I have a class where I'm supposed to create a program for lex and then one for yacc which on my school olympus account is flex and bison. I was wondering how do I go about creating editing the files? Can I use flex and bison to create and edit them or are they just for running the programs. I've been looking around online and cannot seem to find any information on it. Should I try to use something like the VI editor or is there a way to use the other two commands to start on the programs?