Replaces a delimited chunk of text in a file with a delimited chunk of text in another file.
You could think of it as copying part of a file. You use it like this:
   java -jar propagate.jar  fromfile.txt tofile.txt "<start>" "<end>"
You put the from file, to file, starting delimiter and ending delimter on the command line.
The from and to chunks need not be the same length. The fromfile is left unchanged.
The program presumes both files are encoded with UTF-8.
Java source code provided.
The icon represents propagating information in one file to two other files.