PHP Manual Function Reference Command Line Specific Extensions Newt Predefined Constants Checkbox Tree Flags File Descriptor Flags Entry Flags Checkbox Tree Flags Checkbox Tree Flags constant meaning NEWT_CHECKBOXTREE_UNSELECTABLE NEWT_CHECKBOXTREE_HIDE_BOX NEWT_CHECKBOXTREE_COLLAPSED NEWT_CHECKBOXTREE_EXPANDED NEWT_CHECKBOXTREE_UNSELECTED NEWT_CHECKBOXTREE_SELECTED