PDFlib Text Extraction Toolkit (TET) Manual

9.3 TETML Elements and the TETML Schema
A formal XML schema description (XSD) for all TETML elements and attributes as well as
their relationships is contained in the TET distribution. The TETML namespace is the following:
http://www.pdflib.com/XML/TET3/TET-3.0
The schema can be downloaded from the following URL on the Web:
http://www.pdflib.com/XML/TET3/TET-3.0.xsd
Both TETML namespace and schema location are present in the root element of each
TETML document.
Table 9.3 describes the role of all TETML elements. Attributes which have been introduced
with TET 4.1 and TET 4.0 are marked. Figure 9.1 visualizes the XML hierarchy of
TETML elements.
Table 9.3 TETML elements and attributes
TETML element
Attachment
Attachments
Box
Cell
ColorSpace
ColorSpaces
Content
Creation
DocInfo
Document
description and attributes
For PDF attachments describes the contents in a nested Document element. For non-PDF attachments
only the name will be listed, but no contents.
Attributes: name, level, pagenumber
Container of Attachment elements
Describes the coordinates of a Word. The attributes llx and lly describe the lower left corner, urx
and ury describe the upper right corner of the Box in standard PDF coordinates. If the Box represents
a rectangle with edges parallel to the page edges, the four values llx,lly, urx,ury describe
the lower left and upper right corners; otherwise the coordinates of all four corners are
present. A word may contain multiple Box elements, e.g. a hyphenated word which spans multiple
lines of text, or a word which starts with a large character.
Attributes: llx, lly 1 , urx, ury 1 , ulx, uly 1 , lrx, lry 1
Describes the contents of a single table cell.
Attribute: colSpan
Describes a PDF colorspace.
Attributes: alternate, base, components, id, name
Container of ColorSpace elements
Describes the page contents as a hierarchical structure.
Attributes: granularity, dehyphenation (TET 4.0), dropcap (TET 4.0), font, geometry, shadow
(TET 4.0), sub (TET 4.0), sup (TET 4.0)
Describes the date and operating system platform for the TET execution, plus the version number
of TET.
Attributes: platform, tetVersion, date
Predefined and custom document info entries
Describes general document information including PDF file name and size, PDF version number.
Attributes: filename, pageCount, filesize, linearized, pdfVersion, pdfa (TET 4.0: new values
for PDF/A-2; TET 4.1: new values for PDF/A-3), pdfe (TET 4.0; TET 4.1: new values for PDF/E-2),
pdfua (TET 4.1), pdfvt (TET 4.1), pdfx (TET 4.1: enumerated values), tagged
9.3 TETML Elements and the TETML Schema 131