Most program listings in ANALOG are followed by a table of numbers appearing as DATA statements, called "CHECKSUM DATA." These numbers are to be used in conjunction with D:CHECK and C:CHECK, which appeared in the ANALOG Compendium and Issue No. 16.

D:CHECK and C:CHECK are programs by Istvan Mohos and Tom Hudson. They are designed to find and correct typing errors when entering programs from the magazine. For those readers who do not have a copy of either article, send for a copy of back issue 16 ($4.00) or The ANALOG Compendium ($14.95 plus $2.00 shipping and handling) from:

ANALOG Computing
P.O. Box 615
Holmes, PA 19043

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Original text copyright 1984 by ANALOG Computing. Reprinted with permission by the Digital ANALOG Archive.