  This precis is aimed as a practical field-guide to situations in which shear
banding might be expected in complex fluids subject to an applied shear flow.
Separately for several of the most common flow protocols, it summarises the
characteristic signatures in the measured bulk rheological signals that suggest
the presence of banding in the underlying flow field. It does so both for a
steady applied shear flow, and for the time-dependent protocols of shear
startup, step stress, finite strain ramp, and large amplitude oscillatory
shear. An important message is that banding might arise rather widely in flows
with a strong enough time-dependence, even in fluids that do not support
banding in a steadily applied shear flow. This suggests caution in comparing
experimental data with theoretical calculations that assume a homogeneous shear
flow. In a brief postlude, we also summarise criteria in similar spirit for the
onset of necking in extensional filament stretching.
