Helium allows for running user defined scripts.
Scripts are small code blocks that performs various operations on files, artists, albums etc.
You can automate tasks such as tagging, file renaming, bpm calculation and more.
Helium is shipped with a few demonstrational scripts that you can take inspiration from, improve or rebuild. They are located in the following folder:
%APPDATA%\Imploded Software\Helium Version\Scripts