a tool can find the diffrences between two documents

diff
....\BasicDemo1
....\..........\BasicDiffDemo1.cfg
....\..........\BasicDiffDemo1.dof
....\..........\BasicDiffDemo1.dpr
....\..........\BasicDiffDemo1.res
....\..........\Unit1.dfm
....\..........\Unit1.pas
....\BasicDemo2
....\..........\BasicDiffDemo2.dpr
....\..........\BasicDiffDemo2.res
....\..........\HashUnit.pas
....\..........\Unit1.dfm
....\..........\Unit1.pas
....\Diff.pas
....\Diff_O(NP).pas
....\O(ND).pdf
....\O(NP).pdf
....\Readme-说明.htm
....\Readme.txt
....\TextDiff
....\........\TextDiff.exe
....\........\TextDiff.hlp
....\........\TextDiff.ini

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