In the "Contents" section, the hypertext links to the "make-tile" and
"make-anti-aliased" both point to the same anchor in the page, which is
"#make-tile".
In the code example for "make-anti-aliased", the third argument to the
`let' special form which is "red" is malformed such that the hypertext
link to the `allocate-color' function is broken.
--
"Cut your own wood and it will warm you twice"
