Worked on the pharmaverse/admiral repository to enhance documentation and maintainability around date imputation logic in R. Focused on clarifying the definitions of highest date imputation and expanding practical examples for minimum and maximum dates, the work aimed to reduce ambiguity for analysts and improve reproducibility. Applied R programming and data manipulation skills to update both code and user-facing documentation, including revisions to R/derive_vars_dt.R and related manual pages. Quality improvements included repository-wide style standardization using lintr and styler, as well as terminology updates. These changes provided clearer guidance for analysts and maintainers, supporting more reliable and maintainable analytics workflows.