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Well I am putting some tips to myself here...
Chicken User's Manual
To access the manual from the REPL:
csi> (use man) csi> (man:load) csi> (man:search "regex") csi> (man:help 'something-that-exists)
#;1> (use man) #;2> (man:load) #;4> (man:search "case") #;5> (man:help 'case-lambda)