X-Git-Url: http://lambda.jimpryor.net/git/gitweb.cgi?p=lambda.git;a=blobdiff_plain;f=topics%2Fweek1.mdwn;h=ee5478c254692d4054751c437515f06f7e0ddab9;hp=430cc5dd60b0734eb3c7299faf8e60d053b30b55;hb=b057018533a518fea06b637c2a80889c695a1556;hpb=199d99a994e1801b4ef884bda4cce38470ef6fa1

diff --git a/topics/week1.mdwn b/topics/week1.mdwn
index 430cc5dd..ee5478c2 100644
--- a/topics/week1.mdwn
+++ b/topics/week1.mdwn
@@ -626,16 +626,17 @@ Here is the hierarcy of **values** that we've talked about so far.
             *   Booleans (or truth-values)
         *   Functions: these are not literals, but instead have to be generated by evaluating complex expressions
     *   Containers, including:
-        *   the literals `[]` and `{}`
-        *   Non-empty sequences
-        *   Non-empty sets
+        *   the **literal containers** `[]` and `{}`
+        *   Non-empty sequences, built using `&`
+        *   Non-empty sets, built using `&`
         *   Tuples proper and other containers, to be introduced later
 
 We've also talked about a variety of **expressions** in our language, that evaluate down to various values (if their evaluation doesn't "crash" or otherwise go awry). These include:
 
 *   All of the literal atoms and literal containers
 *   Variables
-*   Various complex expressions, built using `&` or λ or `let` or `letrec` or `case`
+*   Complex expressions that apply `&` or some variable understood to be bound to a function to some arguments
+*   Various other complex expressions involving λ or `let` or `letrec` or `case`
 
 The special syntaxes `[10, 20, 30]` are just shorthand for the more offical syntax using `&` and `[]`, and likewise for `{10, 20, 30}`. The `if ... then ... else ...` syntax is just shorthand for a `case`-construction using the literal patterns `'true` and `'false`.