Multiple export clauses in defpackage
The syntax for defpackage allows multiple export clauses. I like to use this feature to visually group related symbols.
(defpackage #:myproject
(:use #:cl)
;; Web stuff
(:export #:fetch
#:parse-url
#:status)
;; File utilities
(:export #:lines
#:first-line
#:touch)
...)
Although it has no effect on the semantics, I find it helpful for reading.