[r6rs-discuss] [Formal] Minor error in library example

[AndrevanTonder]

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Name        : Andre van Tonder
Email       : andre at het.brown.edu
Type        : defect
Priority    : minor
Component   : libraries
Version     : 5.91
Pages       : 26
Dependencies: None

Summary:
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The library "let-div" on page 26 uses "quotient" without importing
(r6rs r5rs).