Fix a link and elaborate on Slip.new versus prefix:<|>, add slip()

doc/Language/list.pod

@@ -95,7 +95,7 @@ to an C<@>-sigiled variable.
     @s[4]; # Says 42 two more times
 
 You may also use the C<.cache> method instead of C<.list>, depending
-on how you want the references handled.  See the C<page on C<Seq>|/type/Seq>
+on how you want the references handled.  See the L<page on C<Seq>|/type/Seq>
 for details.
 
 =comment TODO document .iterator
@@ -105,12 +105,17 @@ for details.
 Sometimes you want to insert the elements of a list into another list.
 This can be done with a special type of sequence called a C<Slip>.
 
-    say (1,(2,3),4) eqv (1,2,3,4)         # says False
-    say (1,Slip.new(2,3),4) eqv (1,2,3,4) # says True
+    say (1,(2,3),4) eqv (1,2,3,4);         # says False
+    say (1,Slip.new(2,3),4) eqv (1,2,3,4); # says True
+    say (1,slip(2,3),4) eqv (1,2,3,4);     # also says True
 
-Another way to make a slip is with the C<|> prefix operator:
+Another way to make a C<Slip> is with the C<|> prefix operator.  Note that
+this has a tighter precedence than the comma, so it only affects a single
+value, but unlike the above options, it will break L<Scalars|/type/Scalar>.
 
-    say (1,|(2,3),4) eqv (1,2,3,4)        # says True
+    say (1,|(2,3),4) eqv (1,2,3,4);        # says True
+    say (1,|$(2,3),4) eqv (1,2,3,4);       # also says True
+    say (1,slip($(2,3)),4) eqv (1,2,3,4);  # says False
 
 =head1 Immutability