1. I had a professor who tried to teach us to write the digit 1 with the serif extended to the baseline, like a very narrow upper case lambda. Ostensibly this was easier to write and gave the digit 1 more body than a single stroke. Has anyone ever heard of this technique of writing the digit 1? 2. I was also at some point taught to add a short downstroke at the end of the vinculum in a radical sign, which ostensibly better demarcates the argument. I still do this. Has anyone ever heard of this technique? 3. Printed fonts in which the digits are all h-height and rest on the baseline seem to be fairly old, for example, I have a facsimile version of a 1611 King James Bible in which all of the digits are equal h-height. This seems to be fairly universal in modern fonts. However, there are printed fonts from the 19th and early 20th century, and probably earlier, in which 0, 1, and 2 are x-height; 3, 4, 5, 7 and 9 descend below the baseline, and 6 and 8 reach up to h-height. In my old book collection, I have several books in which the page numbers are printed using this sort of font, including a reprint of Vega's 1856 logarithmic and trigonometric tables, in which the preface uses equal-height digits, while the tables have a mix of equal-height and ascending and descending digits. I find the ascending and descending digits very beautiful and I wondered if anyone might have a font with such digits. If anyone is interested, I will scan an image of a page of Vega's tables for an example.