Revisions allow you to track differences between multiple versions of your content, and revert back to older versions.
Showed that this is ALL ONES (not zero off the diagonal). Removed link from our Unit matrix to Wikipedia (wiki redirects to Identity, which we treat differently).
added links to related functions, more complete example, and a caution about how examples with one label almost always break when scaled up to multivariate unless the user provides labels for all the additional cells. Added code to automate this with paste.
Identity matrix = 1 on diagonal and 0 elsewhere?
re formatting for clarity
moved edit message to bottom of page
added table display of matrix types
wikipedia links for matrix types... started
added list of legal types
cleaned up headings, editing for clarity
merged stuff from mxmatrix to here
