How should values for environment variables be edited once created?

Editing values for environment variables directly in the Environment Tab is the correct approach because this method provides a streamlined and user-friendly interface specifically designed for managing environment variables. The Environment Tab typically allows for quick access to existing variables, making it easy to view, edit, and save changes in one place without needing to navigate through more complex interfaces.

This approach is particularly useful in a development environment where agility and efficiency are key, as it allows users to make adjustments on the fly when configurations need to be updated, such as switching credentials or modifying settings related to application behavior. The intuitive layout of the Environment Tab helps prevent errors that might occur if variables were managed through more complex processes or requiring additional steps.

Other options are not as effective for this particular task. For example, creating a new variable instead of editing an existing one is generally unnecessary if the intent is merely to change an existing value. Similarly, using the administration panel can be cumbersome and less efficient for straightforward updates, as it may involve additional navigation and steps. The command line, while powerful, may not be suitable for all users, especially those who are less familiar with command-line interfaces, making it less accessible for quick edits compared to the direct method offered in the Environment Tab.