# Designated Values Telmai assesses correctness of special designated values such as: **Default value** where a predefined value is used as a proxy for unspecified actual value. Examples: 0 or -1 may be used as a default value for Salary, ‘Medium’ for Shirt\_Size, ‘Clear’ for Color, ‘US’ for Country, ‘23%’ for Fed\_TAX, ... etc. Note that default values might get intermixed with actual values and, thus, a desire to have them identified will depend on the specific use case **Placeholder** where a dummy value is used as a proxy for unknown actual value. The placeholder can be thought of as a temporary value until the actual value becomes known, or just as a mere empty field filler. Examples: “\*\*\*\*\*\*\*” may be used as a placeholder for Title, “(415) 111-1111” for Phone, 99999 for Zip\_Code, … etc. **Empty proxy** where a string indicating a non existence of value is used. Such proxies come in all sorts of shapes and sizes. Examples: “ ”, “\[ ]”, “none'', “null'', “n/a'', “nothing'', “not provided'', “unknown'', … etc --- # 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.telm.ai/academy/correctness/designated-values.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.