I am writing some educational simulation functions (R funcns) for undergrad students. The functions will be publicly placed in one of the university labs so that students can go and do their exploration and also will be required to do some simulations based on certain parameters they receive. Problem is how I can restrict access to function codes so that students do not change or mess up with them. Any ideas? Thanks! Gamal Note: functions are progressively added to as the course progresses so there is no complete package to install beforehand.