PasDiff Pro is the syntax oriented diff tool for Delphi. With the help it you can easily and fast to clarify what changes were are introduced in the source texts of the program. Main difference PasDiff Pro from similar utilities it that PasDiff Pro takes into account syntax of compared files. As a corollary it, PasDiff Pro insensitive to change comments, cases and reformat sources (add/remove spaces or/and empty lines). With the help PasDiff Pro you can not only compare two files, but also merge them. The outcome of association can be saved in several different sorts (including with usage $IFDEF directives).