Update NOTES.

NOTES

+## NB ##
+
+These notes reflect earlier thinking about the language and may not
+necessarily accurately describe the current goaljobs language.  Please
+read the documentation instead.
+
+## NB ##
+
 Like 'make' except:
  - Predicates can be based on arbitrary expressions, not just
    "file X is older than file Y".
@@ -10,21 +18,11 @@ Differences from 'whenjobs':
  - Goals instead of variables.
  - Persistent (across session) variables exist, but are not central.
  - Doesn't use <<..>> for shell scripts (has a function 'sh' instead).
+ - No daemon.
 
 Similarities to 'whenjobs':
  - Each shell script runs in its own temporary directory.
 
-Example Makefile rule and translation to goaljobs language:
-
-  %.o: %.c
-    cc -c $< -o $@
-
-  let goal compile c_file =
-    require (file_exists c_file);
-    let o_file = replace_substring ".c" ".o" c_file in
-    target (file_exists o_file && file_newer o_file c_file);
-    sh "cc -c %s -o %s" c_file o_file
-
 Example program:
 
   let package = "foo"