comments on RIF Primer

Dear WG,

I found the Primer quite readable, clear and useful,  and just have some
minor comments.

Stella


Section 2.2.2, 2nd para:
       the last sentence reads to me as if the constant is called a
predicate in both the last 2 of the 3 types of constants mentioned, but not
sure if that's what's meant.

 Section 3.2, 3rd para:
       us --> use

       also, I had to read that sentence a few times because I was thinking
that "such information" referred to the lowercase letters and uppercase
letters.

 Section 4:
       1st example:
             the iris for imdb and dbpedia should match up with those in the
section 2.3 rule that this example is combined with (and the prefixes might
as well too).

             missing space after the "char" prefix

 Section 5:
        In the second paragraph maybe add another sentence characterizing
what a function is/does?  There's a specific example in the first paragraph,
but it's a very brief introduction to functions.

Section 5.2.2, Example:
       does Film1 necessarily have to be different from Film2?

       near the top, there's an extra space between dbpedia: and dateoffilm

Section 6.1
    2nd paragraph:
         might as well say "C++ or Java" rather than "C++",  like it does in
Section 6.2.

   Example:
        imdb and dbpedia prefixes and iris could be made consistent with
earlier examples.
        (same comment for the example in 7.1.1)

Section 6.2
        first example:  System.println --> System.out.println

        second example: if it can be written with the less advanced syntax
                   ex:e1 # Example
                   ex:e1[...]
                   ex:e1[...]
             it may be easier to understand the RIF, and the parallel
structure with the Java would be even more obvious.

Section 7
       there are some "add pointer"  notes/comments

General:
      some of the examples are extending outside the blue-colored box and
require scrolling to the right.

Appendix:
     at the very end just before the last reference, there's a span element
displayed.