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 # closeHTMLViewer

 Last update: 16.07.2025 

abstract fun [closeHTMLViewer](close-h-t-m-l-viewer.md)(hwnd: [Long](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-long/index.html)): [Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html)

closes the HTMLViewer embedded browser tool