A multiple sclerosis blog.
Looks to me like a waitron's order notes. So a cluster of text like "#3 O.E. Bac HB" probably means a breakfast platter #3 (whatever that might be) with the eggs Over Easy, Bacon, and Hash Browns.
But it's so chaotic! When I used to wait tables, each table got it's own slip. Man, that's a messed-up-order waiting to happen!