Primitives need meta-comments

```
I want all primitives to be represented in Cat source code files, with 
tests, documentation, type, etc. 

This way a file parser can get the information out of the source code 
files, without needing to hack/read the source code. 
```

Original issue reported on code.google.com by `cdiggins` on 22 Oct 2007 at 3:50
