Application for browsing PDF chess books

Application for browsing PDF chess books. You can get the moves of the chess games of the PDF chess book and edit the tree of variants. You can save the games in PGN format. Multilanguage support (English, Spanish and Catalan). You can edit PGN TAGs, NAGs and comments. You can set a custom starting position for a game. You can load and save lists of games in PGN format. You can browse the PDF chess file while you are browsing its games.