(id bwp) (description "broken-weak-pair object [Chez Scheme]") (id chezscheme) (description "change to Chez Scheme read syntax") (id eof) (description "end-of-file object") (id fold-case) (description "change to case insensitive identifiers [R7RS]") (id key) (description "start keyword arguments in lambda list [DSSSL]") (id no-fold-case) (description "change to case sensitive identifiers [R7RS]") (id optional) (description "start optional arguments in lambda list [DSSSL]") (id r6rs) (description "change to R6RS read syntax [R6RS]") (id r7rs) (description "change to R7RS read syntax") (id rest) (description "start rest argument in lambda list [DSSSL]") (id void) (description "void object")