You can save either a text selection (Text or Tool pane), or all text in a tab to a Plain Text or RTF file. In either case, once exported the plain text or RTF file can be opened in your word processor. If necessary select the text and change it to a font with the same "character mapping" as your export option.
This procedure is the only way text can be exported from a Text or Tool pane.
This option applies to simple text tabs such as Display books, Details, Parsing and Syntax, and the Timeline Data tabs.