In which tool's configuration can you replace a specific string in an expression?

The Action Tool is designed to dynamically alter other tool configurations within a workflow, and it allows for specific replacements in expressions. When configuring the Action Tool, you can specify which string to replace and with what value to substitute it. This is particularly useful when you want to maintain the functionality of a formula or expression while changing certain parameters based on user input or other dynamic factors in the workflow.

In contrast, the other tools mentioned do not serve this purpose. While the Formula Tool is used for creating and modifying expressions, it does not inherently provide a direct mechanism for string replacement like the Action Tool does. The Join Tool focuses on combining data from two sources based on a common field, and the Filter Tool is used to limit data based on certain criteria, neither of which provide functionality specific to replacing strings in expressions.