There are a number of function call interfaces within Puzzles, and
this guide will discuss each one in a chapter of its own. After
-that, (\k{writing}) discusses how to design new games, with some
+that, \k{writing} discusses how to design new games, with some
general design thoughts and tips.
\C{backend} Interface to the back end
Frees a mid-end structure and all its associated data.
+\H{midend-tilesize}
+
+\c int midend_tilesize(midend *me);
+
+Returns the \cq{tilesize} parameter being used to display the
+current puzzle.
+
+\k{backend-preferred-tilesize}
+
\H{midend-set-params} \cw{midend_set_params()}
\c void midend_set_params(midend *me, game_params *params);