some disambiguation

S02-bits.pod

@@ -14,7 +14,7 @@ Synopsis 2: Bits and Pieces
     Created: 10 Aug 2004
 
     Last Modified: 8 Aug 2011
-    Version: 237
+    Version: 238
 
 This document summarizes Apocalypse 2, which covers small-scale
 lexical items and typological issues.  (These Synopses also contain
@@ -1569,19 +1569,19 @@ See L<S06/"Wrapping"> for a discussion of soft vs. hard routines.
 Explicit types are optional. Perl variables have two associated types:
 their "of type" and their "container type".  (More generally, any
 container has a container type, including subroutines and modules.)
-The of type is stored as its C<of> property, while the container
+The C<of> type is stored as its C<of> property, while the container
 type of the container is just the object type of the container itself.
 The word C<returns> is allowed as an alias for C<of>.
 
-The of type specifies what kinds of values may be stored in the
-variable. An of type is given as a prefix or with the C<of> keyword:
+The C<of> type specifies what kinds of values may be stored in the
+variable. An C<of> type is given as a prefix or with the C<of> keyword:
 
     my Dog $spot;
     my $spot of Dog;
 
 In either case this sets the C<of> property of the container to C<Dog>.
 
-An of type on an array or hash specifies the type stored by each element:
+An of type C<on> an array or hash specifies the type stored by each element:
 
     my Dog @pound;  # each element of the array stores a Dog
 
@@ -1601,6 +1601,9 @@ To coerce your return value, use a coercion type:
 
     sub get_pet() returns Pet(Animal) {...}  # coerce any Animal to Pet
 
+For a container, however, use of a coercion type as the C<of> coerces
+upon setting rather than returning the value.
+
 =head2 Container types
 
 The container type specifies how the variable itself is implemented. It is