is an option for TextString and related functions that indicates how an expression with head Missing should be converted to a string.


MissingString
is an option for TextString and related functions that indicates how an expression with head Missing should be converted to a string.
Details

- MissingString->"string" specifies that expressions with head Missing should format as "string".
- MissingString->Automatic specifies that Missing["reason",…] should format as "reason".
- MissingString->None specifies that expressions with head Missing should format unchanged.
Examples
Basic Examples (1)
By default, Missing["NotAvailable"] is treated as "":
Specify a custom value for MissingString:
With MissingString->None, Missing objects are unchanged:
See Also
History
Text
Wolfram Research (2014), MissingString, Wolfram Language function, https://reference.wolfram.com/language/ref/MissingString.html.
CMS
Wolfram Language. 2014. "MissingString." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/MissingString.html.
APA
Wolfram Language. (2014). MissingString. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/MissingString.html
BibTeX
@misc{reference.wolfram_2025_missingstring, author="Wolfram Research", title="{MissingString}", year="2014", howpublished="\url{https://reference.wolfram.com/language/ref/MissingString.html}", note=[Accessed: 16-August-2025]}
BibLaTeX
@online{reference.wolfram_2025_missingstring, organization={Wolfram Research}, title={MissingString}, year={2014}, url={https://reference.wolfram.com/language/ref/MissingString.html}, note=[Accessed: 16-August-2025]}