  The goal of this paper is the fine structure of the ideals in the title, with
emphasis on the properties of the associated Rees algebra and the special
fiber. The watershed between the present approach and some of the previous work
in the literature is that here one does not assume that the ideals in question
satisfy the common generic properties. One exception is a recent work of N. P.
H. Lan which inspired the present work. Here we recover and extend his work. We
strongly focus on the behavior of the ideals of minors of the corresponding
so-called Hilbert--Burch matrix and on conjugation features of the latter. We
apply the results to three important models: linearly presented ideals of plane
fat points, reciprocal ideals of hyperplane arrangements and linearly presented
monomial ideals.
