Worked on improving the Cray libraries documentation in the Lumi-supercomputer/lumi-userguide repository, focusing on enhancing user onboarding and reducing support queries. Used Markdown to deliver clear, actionable updates that clarify how Cray compiler wrappers automatically manage include paths and linker options. Streamlined the documentation by instructing users to simply load the relevant module for proper library usage, and added detailed explanations about the cray-netcdf-hdf5parallel module and its relationship with NetCDF and HDF5. The work emphasized precise technical communication and effective documentation practices, resulting in targeted improvements that make the onboarding process more intuitive for users of the Lumi supercomputer.