Wiki

Hi

I set up a group Wiki for a dozen University students in a class situation and discovered that there is no file locking so one student, A, can inadvertantly delete another student's entry, B, by simply editing her own content. B's edit is effecively blanked out.

I think I set up correctly. But maybe I did wrong somewhere.

I wanted to use a Wiki with 60 f2f learners (in 3 real groups) but I fear chaos is going to result.

Is there any way to prevent these editing collisions, this overwriting?

TIA
Graham
Milton Keynes, England