diff --git a/source/containers.tex b/source/containers.tex
index b750486764..ca1531d778 100644
--- a/source/containers.tex
+++ b/source/containers.tex
@@ -4724,10 +4724,12 @@
 \begin{itemdescr}
 \pnum
 \effects
-Erases all but the first element from every consecutive
-group of equal elements referred to by the iterator \tcode{i} in the range \range{first +
-1}{last} for which \tcode{*i == *(i-1)} (for the version with no arguments) or \tcode{pred(*i,
-*(i - 1))} (for the version with a predicate argument) holds.
+Erases all but the first element from every consecutive group of equal elements.
+That is, for a nonempty list,
+erases all elements referred to by the iterator \tcode{i}
+in the range \range{begin() + 1}{end()}
+for which \tcode{*i == *(i-1)} (for the version with no arguments) or
+\tcode{pred(*i, *(i - 1))} (for the version with a predicate argument) holds.
 Invalidates only the iterators and references to the erased elements.
 
 \pnum
@@ -5416,10 +5418,14 @@
 \pnum
 \effects
 Erases all but the first element from every
-consecutive group of equal elements referred to by the iterator \tcode{i} in the range
-\range{first + 1}{last} for which \tcode{*i == *(i-1)} (for the version of
-\tcode{unique} with no arguments) or \tcode{pred(*i, *(i - 1))} (for the version of
-\tcode{unique} with a predicate argument) holds.
+consecutive group of equal elements.
+That is, for a nonempty list,
+erases all elements referred to
+by the iterator \tcode{i} in the range \range{begin() + 1}{end()} for which
+\tcode{*i == *(i-1)}
+(for the version of \tcode{unique} with no arguments) or
+\tcode{pred(*i, *(i - 1))}
+(for the version of \tcode{unique} with a predicate argument) holds.
 Invalidates only the iterators and references to the erased elements.
 
 \pnum