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...From text files or programs, that haven't visual charts themselves, data is passed to "Graph Capture" and plotted there.
But you have to write Perl RegEx expressions to extract X and Y-values from raw data.
Otherwise, you can request suitable filter templates here https://www.facebook.com/vlad.dubov.77.
For making RegEx expressions short docs are also included in the program. You can find "Help: regular expressions in Perl" in the installation folder or in the program's top bar.
The program can plot charts from a static file ( just drag and drop the file)
or from a dynamically written file - by using a plugin that "connects" to the source.
...