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selection
public selection : tinymce.dom.Selection
Selection instance for the editor.
Examples
// Sets some contents to the current selection in the editor
tinyMCE.activeEditor.selection.setContent('Some contents');
// Gets the current selection
alert(tinyMCE.activeEditor.selection.getContent());
// Selects the first paragraph found
tinyMCE.activeEditor.selection.select(tinyMCE.activeEditor.dom.select('p')[0]);