Developed Undo and Redo functionality for graph edits in the DoodleBUGS module of the TuringLang/JuliaBUGS.jl repository, focusing on enhancing user experience and reliability in graph modeling workflows. The implementation introduced a command-history and state-stack mechanism, enabling efficient tracking and reversal of changes to graph elements. This approach allowed for auditable state changes and streamlined error recovery, reducing the risk associated with complex editing tasks. Leveraging Vue for front end development and JavaScript for state management, the work demonstrated a strong grasp of interactive UI patterns and seamless integration with version control, contributing to more collaborative and robust graph editing.