  We study irreducible surfaces of degree d in $\mathbb{P}^3$ that contain a
line of multiplicity d-1 (monoidal surfaces) or d-2 (submonoidal surfaces). We
relate them to congruences of lines and Cremona transformations. Many of our
results are not new and can be found in the classical literature, we give them
modern proofs. In the last section, we extend some of our results to
hypersurfaces of arbitrary dimension. We define two commuting Cremona
involutions in the ambient space associated to a linear subspace of
multiplicity d-2 contained in the hypersurface. Both leave the hypersurface
invariant, but one acts as the identity on the hypersurface.
