Read an annotation file. An example of Annotation file is defined as follows. (Note: Please remove the comment starting from "----", and the list dot in the real file)
0x000000,0xff0000, 1--------------------Text color, boundary color, show mode (0 -- hide, 1 -- underline, no boundary, white background, 2 -- boundary and background color)
1 ------------------- page number
(0,0,500,500) ------------------- Annotation rectangle, relative to page upper left corner
Test first annotation ------------------- Content
The sencode line of first annotation -------------------- Content