# Text.Layout.Run A run of placed glyphs in a text layout. ``` struct Run ``` ## Topics ### Instance Properties [`var characterIndices: [Text.Layout.CharacterIndex]`](/documentation/SwiftUI/Text/Layout/Run/characterIndices) The array of character indices corresponding to the glyphs in `self`. [`var layoutDirection: LayoutDirection`](/documentation/SwiftUI/Text/Layout/Run/layoutDirection) The layout direction of the text run. [`var typographicBounds: Text.Layout.TypographicBounds`](/documentation/SwiftUI/Text/Layout/Run/typographicBounds) The typographic bounds of the run of glyphs. ### Subscripts [`subscript(T.Type) -> T?`](/documentation/SwiftUI/Text/Layout/Run/subscript(_:)) The custom attribute of type `T` associated with the run of glyphs, or nil. If no run contains the custom attribute we also check its attachment’s runs. ## Relationships ### Conforms To [`Equatable`](/documentation/Swift/Equatable) [`BidirectionalCollection`](/documentation/Swift/BidirectionalCollection) [`Sequence`](/documentation/Swift/Sequence) [`RandomAccessCollection`](/documentation/Swift/RandomAccessCollection) [`Collection`](/documentation/Swift/Collection) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)