The WWP captures some but not all information about the appearance of a printed document. As a general rule, we capture all information that can be easily described using a controlled vocabulary or measurement, using the information we have available to us about the document. We ignore information which is impressionistic or which cannot be captured with certainty based on the materials we work with.
Information we do capture includes the following: indentation, alignment, case, face, justification, delimiters (such as quotation marks), super- and subscription, inversion, columns, position on the page.
Information we do not capture includes the following: weight, type size, typeface, details of fill, special letterforms (e.g. swash characters).