60. The process of claim 57, wherein: the document is defined in a first markup language, and the digital form is defined in a second markup language; the process further comprises accessing a mapping table which defines how to map elements in the first markup language to elements in the second markup language; and the step of combining includes converting the selected portion of the document from the first markup language to the second markup language using the mapping table.
57. The process of claim 56, wherein the document is a digital document having fixed text content and fixed structure defined by descriptive markup defining a plurality of hierarchical elements providing an indication of structure of the digital document.