Lots of small corrections by Andrew Kuchling (plus all new rotor docs)
diff --git a/Doc/ref/ref5.tex b/Doc/ref/ref5.tex
index 3e60931..a4a7b53 100644
--- a/Doc/ref/ref5.tex
+++ b/Doc/ref/ref5.tex
@@ -133,7 +133,7 @@
(Note that tuples are not formed by the parentheses, but rather by use
of the comma operator. The exception is the empty tuple, for which
parentheses {\em are} required --- allowing unparenthesized ``nothing''
-in expressions would causes ambiguities and allow common typos to
+in expressions would cause ambiguities and allow common typos to
pass uncaught.)
\index{comma}
\indexii{tuple}{display}
@@ -677,7 +677,7 @@
An expression (condition) list containing at least one comma yields a
tuple. The length of the tuple is the number of expressions
(conditions) in the list. The expressions (conditions) are evaluated
-from left to right. (Conditions lists are used syntactically is a few
+from left to right. (Condition lists are used syntactically is a few
places where no tuple is constructed but a list of values is needed
nevertheless.)
\obindex{tuple}