  The rectangle capacity, a word statistic that was recently introduced by the
author and Mansour, counts, for two fixed positive integers $r$ and $s$, the
number of occurrences of a rectangle of size $r\times s$ in the bargraph
representation of a word. In this work we find the bivariate generating
function for the distribution on nondecreasing words of the number of $r\times
s$ rectangles and the generating function for their total number over all
nondecreasing words. We also obtain the analog results for Smirnov words, which
are words that have no consecutive equal letters. This complements our recent
results concerned with general words (i.e., not restricted) and Catalan words.
