({{, (RefLink[MissingString, paclet:ref/MissingString]) 
is an option for (RefLink[TextString, paclet:ref/TextString]) and related functions that indicates how an expression with head (RefLink[Missing, paclet:ref/Missing]) should be converted to a string.}})

OpenersNotesSection(Spacer1)Details

(RefLink[MissingString, paclet:ref/MissingString])->"string" specifies that expressions with head (RefLink[Missing, paclet:ref/Missing]) should format as "string".

(RefLink[MissingString, paclet:ref/MissingString])->(RefLink[Automatic, paclet:ref/Automatic]) specifies that (RefLink[Missing, paclet:ref/Missing])["reason",…] should format as "reason".

(RefLink[MissingString, paclet:ref/MissingString])->(RefLink[None, paclet:ref/None]) specifies that expressions with head (RefLink[Missing, paclet:ref/Missing]) should format unchanged.

OpenersPrimaryExamplesSection(Spacer1)Examples  (1)

OpenersExampleSection0(Spacer1)Basic Examples  (1)

By default, (RefLink[Missing, paclet:ref/Missing])["NotAvailable"] is treated as "":

TextString[{Yesterday,Missing["NotAvailable"]}]

Specify a custom value for (RefLink[MissingString, paclet:ref/MissingString]):

TextString[{Yesterday,Today,Tomorrow,Missing["NotAvailable"]},MissingString->"Missing"]

With (RefLink[MissingString, paclet:ref/MissingString])->(RefLink[None, paclet:ref/None]), (RefLink[Missing, paclet:ref/Missing]) objects are unchanged:

TextString[{DateObject[],Missing["unknown"]},MissingString->None]

({{DocumentationFooterIconsRelatedFunction.png, ({{See Also}, {(RefLink[TextString, paclet:ref/TextString])  ▪  (RefLink[Missing, paclet:ref/Missing])  ▪  (RefLink[MissingDataRules, paclet:ref/MissingDataRules])}})}})