A modified version of the fpdf library is embedded. There is nothing to do. Please make sure that fonts are available in the pdf subdirectory.
characteristics: there are no default values available, they will be ignored. Think about a (paper) form, would you like to have fields initialised with default values? The choice element is an empty line. Please remove your debugging output before creating pdf files with fpdf. To generate a pdf you can clone an existing view with the copy() function into a pdf view.