Date: Tue, 29 Aug 2023 18:22:16 -0400
From: Douglas McIlroy
To: Warren Toomey
Subject: Source of CSTR 41 (diff)

Warren,

The attached source is ersatz, reconstructed with the help of OCR and
pic, which didn't exist when CSTR 41 was written. Layout of pages may
differ from the original. The only significant alteration I am aware
of is the presence in Figure 1 of a segment that the original lacked.