Developed enhanced history navigation for the RBVI/ChimeraX project, focusing on improving command lookup efficiency within the command-line interface. Leveraging Python and GUI development skills, introduced two distinct search modes in the history dialog: Shift-StartsWith for prefix matching and Alt-Full-Text Search for comprehensive text queries. This approach streamlined event handling and optimized the user experience by enabling faster discovery of previous commands. The work laid a foundation for extensible history search features, directly supporting productivity for researchers and developers. All changes were explicitly documented and traceable, reflecting a methodical engineering process with attention to usability and maintainability in the codebase.