({{, (RefLink[Postfix, paclet:ref/Postfix])[f[expr]]
prints with f[expr] given in default postfix form: expr//f. }, {, (RefLink[Postfix, paclet:ref/Postfix])[f[expr],h]
prints as exprh. }})

OpenersNotesSection(Spacer1)Details

(RefLink[Postfix, paclet:ref/Postfix])[expr,h,precedence,grouping] can be used to specify how the output form should be parenthesized.

OpenersPrimaryExamplesSection(Spacer1)Examples  (2)

OpenersExampleSection0(Spacer1)Basic Examples  (2)

Display f[x] in postfix form:

Postfix[f[x]]

Use a special character as a postfix operator:

Postfix[f[x],"§"]

({{DocumentationFooterIconsRelatedFunction.png, ({{See Also}, {(RefLink[Infix, paclet:ref/Infix])  ▪  (RefLink[Prefix, paclet:ref/Prefix])}})}})

({{DocumentationFooterIconsRelatedTutorial.png, ({{Tutorials}, {▪(RefLinkPlain[Defining Output Formats, paclet:tutorial/DefiningOutputFormats])}})}})

({{DocumentationFooterIconsRelatedGuide.png, ({{Related Guides}, {▪(RefLinkPlain[Wolfram Language Syntax, paclet:guide/Syntax])}, {▪(RefLinkPlain[Symbolic Notational Forms, paclet:guide/SymbolicNotationalForms])}})}})