`what' was an old unix program which would access certain identifying lines within text files, allowing easy reading of key parts of files without having to use a pager or editor.
I used the search features of the debian web site's Package page, searching on `what', but to no avail (the first search yielded the empty set, the second search more than would fit on a page, but all that was not the "right" what) (eh, what?). So, two questions: 1) where (i.e., in what package) is the program `what' to be found? 2) how could I effectively use the web pages search, or some other search capability, to have answered that question without bothering the debian mailing lists?