In European and West Asian

typography Typography is the art and technique of arranging type to make written language legible, readable and appealing when displayed. The arrangement of type involves selecting typefaces, point sizes, line lengths, line-spacing ( leading), and ...

and

penmanship Penmanship is the technique of writing with the hand using a writing instrument. Today, this is most commonly done with a pen, or pencil, but throughout history has included many different implements. The various generic and formal hist ...

, the baseline is the line upon which most letters ''sit'' and below which

descender In typography and handwriting, a descender is the portion of a letter that extends below the baseline of a font. For example, in the letter ''y'', the descender is the "tail", or that portion of the diagonal line which lies below the ''v'' c ...

s extend. In the example to the right, the letter 'p' has a descender; the other letters sit on the (red) baseline. Most, though not all,

typeface A typeface (or font family) is the design of lettering that can include variations in size, weight (e.g. bold), slope (e.g. italic), width (e.g. condensed), and so on. Each of these variations of the typeface is a font. There are list of type ...

s are similar in the following ways as regards the baseline: * capital letters sit on the baseline. The most common exceptions are the J and Q. *Lining figures (see

Arabic numerals Arabic numerals are the ten numerical digits: , , , , , , , , and . They are the most commonly used symbols to write Decimal, decimal numbers. They are also used for writing numbers in other systems such as octal, and for writing identifiers ...

) sit on the baseline. *The following

text figures Text figures (also known as non-lining, lowercase, old style, ranging, hanging, medieval, billing, or antique figures or numerals) are numerals designed with varying heights in a fashion that resembles a typical line of running text, hence the ...

have descenders: 3 4 5 7 9. *The following lowercase letters have descenders: g j p q y. *

Glyphs A glyph () is any kind of purposeful mark. In typography, a glyph is "the specific shape, design, or representation of a character". It is a particular graphical representation, in a particular typeface, of an element of written language. A g ...

with rounded lower and upper extents (0 3 6 8 c C G J o O Q) dip very slightly below the baseline ("overshoot") to create the optical illusion that they sit on the baseline, and rise above the x-height or capital height to create the illusion that they have the same height as flat glyphs (such as those for H x X 1 5 7). Peter Karow's ''Digital Typefaces'' suggests that typical overshoot is about 1.5%. The vertical distance of the base lines of consecutive lines in a paragraph is also known as line height or

leading In typography, leading ( ) is the space between adjacent lines of type; the exact definition varies. In hand typesetting, leading is the thin strips of lead (or aluminium) that were inserted between lines of type in the composing stick to incre ...

, although the latter can also refer to the baseline distance minus the font size. Northern

Brahmic scripts The Brahmic scripts, also known as Indic scripts, are a family of abugida writing systems. They are used throughout the Indian subcontinent, Southeast Asia and parts of East Asia. They are descended from the Brahmi script of ancient India ...

have a characteristic ''hanging'' baseline; the letters are aligned to the top of the writing line, marked by an overbar, with diacritics extending above the baseline. East Asian scripts have no baseline; each glyph sits in a square box, with neither ascenders nor descenders. When mixed with scripts with a low baseline, East Asian characters should be set so that the bottom of the character is between the baseline and the descender height.

References

* http://pfaedit.sourceforge.net/glossary.html#baseline Typography Penmanship {{Typ-stub

See also

References