# Optional Constants Some tools come with optional global settings: "Optional Constants". Just as with the main "Constants" on the tool, you can configure different values here that you can then access in the tool's tags. Further, you can configure your own tool constant values to refer to in the tags. Again, those values can be a default setting or set to individual values on the container and environment levels. --- # 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.jentis.com/jentis-dcp-elements/tools/advanced-settings/optional-constants.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.