Matlab annoyance

I am really annoyed at Matlab. It keeps a record of all your old commands. At least, that's what it seems to do. Gives you a nice good feeling that "nothing is ever lost". However, it turns out that it only saves a certain amount of history, and then it starts throwing away commands. I didn't lose anything critical, but it certainly makes me unhappy that I cannot go back and see what I did a few months ago.