The Operation Settings Editor is where you adjust all settings for the operations in your project. While each Operation type has its own unique set of parameters, many of the settings work the same way across all or many operations.
Documentation on Common Settings:
Operation Settings Editor - MillMage Documentation
Download our 0.9 Release Candidate here:
Index of /MillMage/RC/MillMage-v0.9.00-RC-4/
Check out the Getting Started section of our docs for more information:
Getting Started - MillMage Documentation