This archive contains almost everything you need to build the Titanium development ROM image. It includes the build environment and full source code (including all of the latest "GitLab":https://gitlab.riscosopen.org/explore/groups changes). The archive should be unpacked using UnTarBZ2, available from the "Miscellaneous downloads":/content/downloads/common page. Note: there are a handful of build tools which are part of a commercial product, the "Desktop Development Environment":/content/sales/dde so you will need to have that in order to do a build. For detailed build instructions, see [[How to build RISC OS]].