Usage of % in function and method names

Question

I'm looking through code and seeing % at the beginning of function and method names. For example defun %rod and defmethod %do-query. Is there a standard convention for using this kind of naming scheme?

Answer 1

From a few places:

%foo: low-level, fast, dangerous function, or Lisp system specific implementation of foo

Answer 2

For naming conventions in Common Lisp see here:

http://www.cliki.net/naming%20conventions