In case this hasn't been noticed yet from the exp tagged plt: Index: unit.ss =================================================================== RCS file: /cvs/plt/collects/drscheme/private/unit.ss,v retrieving revision 1.44 diff -r1.44 unit.ss 1180c1180 < (make-object c% (string-constant insert-large-letters...) --- > (make-object c% (string-constant insert-large-semicolon-letters...)