We consider semilinear parabolic equations $u_t=u_{xx}+f(u)$ on
$\mathbb R$. We give an overview of results on the large time
behavior of bounded solutions, focusing in particular on their
limit profiles as $t\to\infty$ with respect to the locally uniform
convergence. The collection of such limit profiles, or, the
$\omega$-limit set of the solution, always contains a steady
state. Questions of interest then are whether---or under what
conditions---the $\omega$-limit set consists of steady states, or
even a single steady state. We give several theorems and
examples pertinent to these questions.