Nodes to contain Windows exe files.

I have a collection of custom written programs to process genome data eg to derive snp files from fasta files etc. These programs (Windows exe files) seem superficially to be just like KNIME nodes ie ReadATextFile ->Input some parameters->DoSome Calculations->OutputResultsTextFile. Many times I use the output of one program as input to the next. Can I use KNIME to organise and automate this process? Is there an example anywhere of how to organise a node to run a Windows executable at it’s heart?

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