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Gets or sets a value indicating whether modification of the document's theme information should be blocked.
public bool BlockThemeOrSchemeSwitching { get; set; }
Public Property BlockThemeOrSchemeSwitching As Boolean
Specifies whether applications shall prevent the modification of the document's theme information stored in the Theme part when editing this document. This setting should not preclude the use of the theme information, instead, it should only prevent the modification of the theme part in a single operation (either through a user interface or a programmatic operation).