The WWP regularizes or ignores certain kinds of space on the printed page. We also regularize or ignore certain aspects of type size.
1. The WWP regularizes variable or extraordinary spacing within words (for instance, between the letters of a word in a title). We regularize extra interword spacing to a single space. We regularize apparent lack of interword spacing in cases where a typographical line is very tightly spaced so that words are packed close together: in such a case, we treat the line as if there were ordinary interword spacing. However, in a normally spaced line, where two words are extraordinarily close together, we would encode them using <sic> so as to retain the original information. The assumption here is that the abnormally close spacing may in some cases indicate a special usage that should not be silently regularized. See example 1.
2. The WWP does not record information about vertical spacing, such as the amount of space between text lines, between paragraphs, or between lines in a display page. For discussion, see tag-l, 1998-02-10 Encoding meeting minutes.
3. The WWP does not record absolute type size, accidental variations in type size within a word or line, or intentional variations in type size (for instance, on a display page). We indirectly record the last of these only in the sense that we use a change in type size as an possible motivation for a change of element (for instance, a separation between a title and a subtitle). Although changes in type size (particularly at the word level) may indicate emphasis or different relative importance of individual words or phrases (e.g. on title pages), we do not record the fact of the change in type size, but rather the change of element that it indicates. Note that this policy is slightly different from our treatment of other renditional information: where italics, for instance, indicate a change of element, we record the italicization in the renditional ladder.
4. The WWP records the use of small capitals, where their presence is evident from a difference in size between the small capital and another (ordinary-sized) capital in the same line or group of lines. Small capitals are treated as a separate renditional feature rather than a different size, and their actual or relative size is not recorded. See the entry on small caps for more information.