Microsoft Typography  Developer  Character design standards  Overview  
Uc  Lc  Figures  Spaces  Diacritics  Punctuation  Monetary  Math  Symbol  
There are two main categories of numerals. Proportional  the advanced widths of characters zero through nine are on widths in proportion to their individual character's black width. In most proportionally spaced numerals the number one is on a thinner proportional advance width than the other figures which are on the same width as the zero. Old style numerals are also considered proportional numerals. Tabular  all character's advance widths are the same value. This aids in setting numerals for data in columns.
Note : Traditional nondigital typefaces offered proportional, tabular, old style and/or lining numerals. In tabular numerals the advance width and in proportional numerals any good model figure, such as the figure zero, is commonly referred to as the 'figure width' and it is used for the widths of some monetary symbols. The Dollar, Pound Sterling, Lira, Vietnamese Dong and Euro should all be on the figure width. The monetary signs Cent, Colon, Cruzeiro, French Franc, Naira, Peseta, Rupee, Won, and New Shekel may require a unique advance width.
This is the value of uppercase flat heights such as the top of the 1, 4, 5, and 7 in most typefaces with proportional and lining numerals.
All figure flat characters that have the same top feature should be at the same value exactly in most text fonts. Old style numerals like the numerals in Georgia, have different alignment rules. These numerals are sometimes called hanging or xheight numerals and were offered in most traditional text fonts. They are best suited for text settings with numerals as opposed to solely numeric data. The 0, 1, and 2 align from the baseline to the xheight (rounds to overshoot heights). The numerals 3, 4, 5, 7 and 9 descend to the nearly the lowercase descender. The numerals 6 and 8 ascend to commonly the figure overshoot height.
Note : The figure 1 or 4 tops may not align with the flat numerals 5 and 7 in many serif typefaces dependent on the diagonal strokes at the top of the characters.
This is the value of figure round heights such as the 0, 2, 3, 5, 6, 8 and 9.
All other figure round characters that have the same top and bottom feature should be at the same value exactly in most text fonts. They should overshoot the baseline of the flat characters the same amount as the top overshoots the top of the figure flat characters.
The most important character with regard to spacing any figure, mathematical or monetary symbol is the zero. This is the model character most type designers use to space the rest of these groups. They are used in chains to test how the current character spaces between other straight or round stems. When spacing outlines, glyphs should be visually centered as opposed to mathematically. It is helpful in modern geometric designs to use a mathematical logic in spacing. In such a case the sidebearing values of round featured characters are mathematically the same and usually less than the flat characters values. All characters should position in their cell in a similar way so when placed in text they space evenly. This does not mean center. It is common for some typefaces (italics) to position the black of the glyph (black width) to the right of the mathematical center of the advance width. The zero is used to test how the current character centers in the font, not in its advance width.
These characters are fractions useful for setting data in tighter spaces than allowed by shilling or vulgar fractions. They are called 'nut' fractions commonly since they are placed on the en space or 'nut' of the typeface. Design : The numerator and denominator for these fractions usually need to be smaller than the inferior and superior numerals to fit within the figure height of the typeface. Their weight should be adjusted so they do not appear too light in comparison to the rest of the typeface. Alignment : The numerator aligns with the figure height and the denominator traditionaly sits below the baseline. It is also common for the denominator to sit on the baseline.


Uc  Lc  Figures  Spaces  Diacritics  Punctuation  Monetary  Math  Symbol  
Microsoft Typography  Developer  Character design standards  Overview  