What are binodal points ?



What are the binodal points of the cubic surface
X^3 +AY^3 +AAZ^3 -3AXYZ = m ?

In 19th century papers, I've come across a number of
references to "hyperbolas" that are producrs of
complex lines, complex planes, complex cyliners, etc.
It is always assumed that the reader is familar
with complex asymtotes, binodal points, unicursals,
szyzygies and so on. Where could I find out
more about this once widely known terminology
and the techniques used to interpret complex surfaces ?
.