Hi All, as announced last summer, I’d like to start a comprehensive tutorial on how to use Standard C / ANSI C in the UEFI environment and how to design and implement such a library for Shell and POST usage. Since most parts of that comprehensive work are already done, I will report, demonstrate and discuss implementation principles and details on edk2.groups.io as a kind of “blog” on a biweekly basis. Please checkout my first CdePkgBlog https://github.com/tianocore/edk2-staging/tree/CdePkg/blogs/2021-11-14#cdepkgblog-2021-11-14 and enjoy the breathtaking build speed if compiler and linker are used exclusively to create MY LEGACY TOOLBOX, a handy set of one-trick-ponies that I have been using for about 25 years. Have fun, Kilian