Spire.PDF 6.3.10 supports setting subjects for newly-created PdfFreeTextAnnotation

We're pleased to announce the release of Spire.PDF 6.3.10. This version supports setting subjects for newly created PdfFreeTextAnnotation. Besides, it also fixes some issues that occurred when converting PDF to Image and manipulating files. See the content below for more details.

Here is a list of changes made in this release

RectangleF rectangle = new RectangleF(0, 150, 100, 30);
PdfFreeTextAnnotation textAnnotation = new PdfFreeTextAnnotation(rectangle);
textAnnotation.Text = "Spire.PDF";
textAnnotation.Subject = "test";