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Every change to Sheet 1 since it was first issued, with the date and the reason, the way we kept the revision block on a drawing. Each change raises the revision letter by one. The current letter is H. The next will be J: the letter I is not used on drawings, being too easily read as a 1.
| REV. A · 3-14-98 · ECN 98-1 · BY W.G. |
| CHANGE: Original issue. One sheet: an introduction and THE SLIDE RULES, words only, on a white background. REASON: Initial release. |
| REV. B · 5-2-98 · ECN 98-2 · BY W.G. |
| CHANGE: Added the table of slide rules by maker, with a total. Table set at WIDTH="600". REASON: Three correspondents asked how many rules I have and of what make. |
| REV. C · 8-15-98 · ECN 98-3 · BY W.G. |
| CHANGE: Added the calculator picture at THE SLIDE RULES. Added the visitor counter. REASON: A page of nothing but words looked like a specification. |
| REV. D · 11-7-98 · ECN 98-4 · BY W.G. |
| CHANGE: Background changed from white, #FFFFFF, to #EEF4F8. Links changed to dark blue and dark gray to suit. REASON: White glared on the monitor in the evening. The new color is that of drafting vellum, which is easy on the eyes and which I looked at for forty-one years. |
| REV. E · 3-6-99 · ECN 99-1 · BY W.G. |
| CHANGE: Added the section FRANCES, with the heart picture. REASON: Omission. The page was not complete without her. |
| REV. F · 5-22-99 · ECN 99-2 · BY W.G. |
| CHANGE: Added WIDTH and HEIGHT to every picture: the calculator, the heart and the six counter digits. REASON: A reader in Ohio, on a slow telephone line, wrote that the words jumped down the page each time a picture arrived. See Sheet 2, Note 7. |
| REV. G · 7-10-99 · ECN 99-3 · BY W.G. |
| CHANGE: (1) Added the section THE WORKBENCH, with the hammer picture. (2) Added the title block. (3) Slide rule table changed from WIDTH="600" to WIDTH="100%". REASON: (1) and (2): the page wanted them. (3): A reader in Hot Springs, Arkansas, who looks at pages on her WebTV for anyone who asks, reported that the table ran off the side of her television. |
| REV. H · 9-18-99 · ECN 99-4 · BY W.G. |
| CHANGE: (1) Added Sheet 2, the HTML of Sheet 1, line by line, with notes, and Sheet 3, this history. (2) Links to both added to Sheet 1. (3) Every line of Sheet 1's HTML broken to 44 characters or fewer. REASON: Documentation. A drawing that cannot be checked is not finished. The short lines let Sheet 2 show each one whole. |
| TITLE HOME PAGE, W. GIFFORD: REVISIONS | |
| DRAWN W.G. | CHECKED |
| DATE 9-18-99 | REV. H |
| SCALE NONE | SHEET 3 OF 3 |