textinsert.extension boolean textinsert.extension Enables the textinsert extension element The textinsert extension element inserts the contents of a file into the result tree (as text). To use the textinsert extension element, you must use either Saxon or Xalan as your XSLT processor (it doesn’t work with xsltproc), along with either the DocBook Saxon extensions or DocBook Xalan extensions (for more information about those extensions, see DocBook Saxon Extensions and DocBook Xalan Extensions), and you must set both the use.extensions and textinsert.extension parameters to 1. As an alternative to using the textinsert element, consider using an Xinclude element with the parse="text" attribute and value specified, as detailed in Using XInclude for text inclusions. You can also use the dbhtml-include href processing instruction to insert external files — both files containing plain text and files with markup content (including HTML content). For how-to documentation on inserting contents of external code files and other text files into output, see External code files. For guidelines on inserting contents of HTML files into output, see Inserting external HTML code.