Attempt to clarify removedirs().
Based on SF bug #574773.
diff --git a/Doc/lib/libos.tex b/Doc/lib/libos.tex
index 33c1e54..4220d6d 100644
--- a/Doc/lib/libos.tex
+++ b/Doc/lib/libos.tex
@@ -750,7 +750,7 @@
\begin{funcdesc}{removedirs}{path}
\index{directory!deleting}
-Recursive directory removal function. Works like
+Removes directories recursively. Works like
\function{rmdir()} except that, if the leaf directory is
successfully removed, directories corresponding to rightmost path
segments will be pruned way until either the whole path is consumed or