How to read a PDF text matrix

Question

I am writing a program to create PDF file directly from my Program. I have used the PDF Reference manual and managed to figure out everything except for 1 thing. The Text Matrix

Answer 1

Also interesting for you could be Chapter 4.2.2 Common Transformations in PDF developer reference https://www.adobe.com/content/dam/acom/en/devnet/pdf/pdfs/pdf_reference_archives/PDFReference.pdf