hi friends,
I prefer PDF format for books, because u can underline or highlight the important points with adobe acrobat professional. U can also write new comments with typewriter tool, use photgraphs in ur presentations ( CHM does not allow any of this function).
If u have book in CHM convert it to PDF using CHM2PDF converter.
If PDF is password protected use advanced pdf password remover to allow marking/editing
=O
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