//not appear to be documented anywhere. Through examining a few
//PDF documents and the value that Acrobat places in there I
//have determined that the below method of computing the position
//is correct for certain documents, but maybe not all. It does
//work f1040ez.pdf and Form_1.pdf
PDFontDescriptor fd = ((PDSimpleFont)pdFont).getFontDescriptor();
float bBoxHeight = boundingBox.getHeight();
float fontHeight = fd.getFontBoundingBox().getHeight() + 2 * fd.getDescent();
fontHeight = (fontHeight/1000) * fontSize;
pos = (bBoxHeight - fontHeight)/2;
}
else
{