SML (sml.tar.gz) is a concept browser, which gets its formatting and text information from different files.
This means the webpage itself is split up to 4 files:
1. test.sml
        #formatting instructions:
        test.fmt
        #text information:
        test.txt
        #url information
        test.url
2. test.fmt
        s12 cn u1 i0 w50 l0 n
        s8  cb u0 i0 w50 l1 q0 l2 n
3. test.txt
        Alpacas
        are really
        great
4. test.url
        test2.sml

Rendered webpage looks like this then:

Alpacas
are really great


There are two main reasons to split up the webpage:
1. No more XSS: The text file is treated only as a textfile. It's not executed. You cannot hide XSS in a text, which is not executed at all.
2. Easier to parse: The example browser uses the stl string class (with boost) for the formatting file and QString (for unicode) for the text file.