paper

docs/paper.tex

@@ -261,7 +261,9 @@ search is divided into two phases: the inversion phase and the
 focusing phase. In the inversion phase, the rules are applied
 eagerly. Backtracking is limited to the focusing phase and the choice
 of focus. To avoid pointless choices, in an implementation one could
-e.g.~store with each formula the set of its atomic targets.
+e.g.~store with each formula the set of its atomic targets, or use
+more sophisticated data structures allowing to perform the focusing
+phase in ``one step''.
 
 \smallskip
 \noindent Inversion phase: