Where is this documentation? Honestly I don't see much here. I'd call this a readme, not documentation.
oh, the sidebar disappears quickly when we scroll and it disappears when we click on "show me"… not great.
ciel-user> (disassemble #'(lambda (x) (+ x 2)))
Error: Missing closing quotation in string (line 1):
(disassemble #'(lambda (x) (+ x 2)))
ciel-user> (disassemble (lambda (x) (+ x 2)))
; disassembly for (LAMBDA (X))
; Size: 35 bytes. Origin: #x54354A64
; (LAMBDA (X)
Meanwhile, you can use CIEL in your editor (as a library or with the core image), where you'll have a normal REPL and this will work.