Worked on the JuliaLang/julia repository to enhance developer documentation during the parser migration to JuliaSyntax.jl in version 1.10. Focused on clarifying the adoption of JuliaSyntax.jl as the default parser and provided detailed guidance for reverting to the previous femtolisp-based parser if necessary. The update was implemented in Markdown, emphasizing clear communication and reducing ambiguity for both users and contributors. No bug fixes were addressed during this period, as the primary effort centered on documentation quality and migration support. This work improved onboarding and ensured the documentation accurately reflected ongoing changes in the Julia language’s parsing infrastructure.