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# Styling Attributed Strings

Attributes to which Core Text responds when placed in a `CFAttributedString` object.

## Discussion

This reference document describes the attributes to which Core Text responds when the attributes are placed in a <doc://com.apple.documentation/documentation/CoreFoundation/CFAttributedString> object.

## Topics

### Constants

[String Attribute Name Constants](/documentation/CoreText/string-attribute-name-constants)

These constants represent string attribute names.

[`CTUnderlineStyle`](/documentation/CoreText/CTUnderlineStyle)

Underline style specifiers.

[`CTUnderlineStyleModifiers`](/documentation/CoreText/CTUnderlineStyleModifiers)

Underline style modifiers.


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