# Text Format Description Constants Constants that identify text format descriptions. ## Topics ### Description Constants [`let kCMTextFormatDescriptionColor_Red: CFString`](/documentation/CoreMedia/kCMTextFormatDescriptionColor_Red) The color value for red is a number. [`let kCMTextFormatDescriptionColor_Green: CFString`](/documentation/CoreMedia/kCMTextFormatDescriptionColor_Green) The color value for green is a number. [`let kCMTextFormatDescriptionColor_Blue: CFString`](/documentation/CoreMedia/kCMTextFormatDescriptionColor_Blue) The color value for blue is a number. [`let kCMTextFormatDescriptionColor_Alpha: CFString`](/documentation/CoreMedia/kCMTextFormatDescriptionColor_Alpha) The color value for the alpha is a number. [`let kCMTextFormatDescriptionRect_Top: CFString`](/documentation/CoreMedia/kCMTextFormatDescriptionRect_Top) The top value for the rect as a 16-bit number. [`let kCMTextFormatDescriptionRect_Left: CFString`](/documentation/CoreMedia/kCMTextFormatDescriptionRect_Left) The left value for the rect as a 16-bit number. [`let kCMTextFormatDescriptionRect_Bottom: CFString`](/documentation/CoreMedia/kCMTextFormatDescriptionRect_Bottom) The bottom value for the rect as a 16-bit number. [`let kCMTextFormatDescriptionRect_Right: CFString`](/documentation/CoreMedia/kCMTextFormatDescriptionRect_Right) The right value for the rect as a 16-bit number. [`let kCMTextFormatDescriptionStyle_StartChar: CFString`](/documentation/CoreMedia/kCMTextFormatDescriptionStyle_StartChar) The style value for the starting character. [`let kCMTextFormatDescriptionStyle_Font: CFString`](/documentation/CoreMedia/kCMTextFormatDescriptionStyle_Font) The style value for font. [`let kCMTextFormatDescriptionStyle_FontFace: CFString`](/documentation/CoreMedia/kCMTextFormatDescriptionStyle_FontFace) The style value for font face. [`let kCMTextFormatDescriptionStyle_ForegroundColor: CFString`](/documentation/CoreMedia/kCMTextFormatDescriptionStyle_ForegroundColor) The style value for foreground color. [`let kCMTextFormatDescriptionStyle_EndChar: CFString`](/documentation/CoreMedia/kCMTextFormatDescriptionStyle_EndChar) The style value for the ending character. [`let kCMTextFormatDescriptionStyle_Height: CFString`](/documentation/CoreMedia/kCMTextFormatDescriptionStyle_Height) The style value for the height. [`let kCMTextFormatDescriptionStyle_Ascent: CFString`](/documentation/CoreMedia/kCMTextFormatDescriptionStyle_Ascent) The style value for the ascent. [`let kCMTextFormatDescriptionStyle_FontSize: CFString`](/documentation/CoreMedia/kCMTextFormatDescriptionStyle_FontSize) The style value for the font size. ### Description Extension Constants [`let kCMTextFormatDescriptionExtension_DisplayFlags: CFString`](/documentation/CoreMedia/kCMTextFormatDescriptionExtension_DisplayFlags) The extension flag that represents the display flags. [`let kCMTextFormatDescriptionExtension_BackgroundColor: CFString`](/documentation/CoreMedia/kCMTextFormatDescriptionExtension_BackgroundColor) The extension flag that represents the background color. [`let kCMTextFormatDescriptionExtension_DefaultTextBox: CFString`](/documentation/CoreMedia/kCMTextFormatDescriptionExtension_DefaultTextBox) The extension flag that represents the default text box. [`let kCMTextFormatDescriptionExtension_DefaultStyle: CFString`](/documentation/CoreMedia/kCMTextFormatDescriptionExtension_DefaultStyle) The extension flag that represents the default style. [`let kCMTextFormatDescriptionExtension_HorizontalJustification: CFString`](/documentation/CoreMedia/kCMTextFormatDescriptionExtension_HorizontalJustification) The extension flag that represents the horizontal justification. [`let kCMTextFormatDescriptionExtension_VerticalJustification: CFString`](/documentation/CoreMedia/kCMTextFormatDescriptionExtension_VerticalJustification) The extension flag that represents the vertical justification. [`let kCMTextFormatDescriptionExtension_FontTable: CFString`](/documentation/CoreMedia/kCMTextFormatDescriptionExtension_FontTable) The extension flag that represents the font table. [`let kCMTextFormatDescriptionExtension_TextJustification: CFString`](/documentation/CoreMedia/kCMTextFormatDescriptionExtension_TextJustification) The extension flag that represents the text justification. [`let kCMTextFormatDescriptionExtension_DefaultFontName: CFString`](/documentation/CoreMedia/kCMTextFormatDescriptionExtension_DefaultFontName) The extension flag that represents the default font name. --- 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)