xref to some exercises don't work in print

[kcrisman]

In general the hyperlinks in print work great. (Except they always seem to skip to the line after the title, but that is probably my reader.) An exception is that at least some exercise links just go to the top of the page (this is in the 3.50 tablet version), like "Notice that each of the three row operations is reversible (Exercise RREF.T10)" where this happens.

I do not have a diagnosis, my apologies.