# April 27, 2023: Generate Functions, Performance improvements, bulk column header transformations ## Generate Functions Mito Enterprise users can generate Python functions, making it easier to reuse the generated code on different datasets. ## Performance Improvements The Mito spreadsheet is now 1/2 the size it used to be. Having multiple Mito spreadsheets in one notebook should be less problematic. ## Bulk column header transformations Mito Pro and Enterprise users can now update all of their column headers at once! ## Import Improvements You can now select sheets within an Excel file to import by sheet index instead of sheet name. Configuring imports to use sheet index is helpful when the location of the sheet will remain the same each time you run the code, but the sheet name might change. Additionally, when importing ranges from Excel files, you can now use the `row is completely empty` table end condition. ## Small Fixes 1. Fixes a bug where promote row to header would not support `NaN` values. 2. Makes the result of each export option more clear by updating the title and adding subtext. 3. Fixes bug where Mito appended blank divs to the notebook inorder to render dropdowns. #### --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.trymito.io/misc/release-notes/april-27-2023-generate-functions-performance-improvements-bulk-column-header-transformations.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.