The regular product documentation outlining the core features and elements of UNISI is available on the project's GitHub page at the following link: https://github.com/unisi-tech/unisi. You can purchase premium online documentation and support UNISI development on this page below or on Patreon . Premium documentation goes into more detail and includes chapters on advanced setup and programming. Payments are secured by WIX, Stripe and Paypal. Payment through a shopping cart is related to the features of WIX.