private void updateCommentIndicator() {
		// [srk] same protection added to updateColors
		// make sure node is not null
		if (node == null) {
			return ;
		} // end if
		
		if (node.getCommentState() == Node.COMMENT_TRUE) {
			iComment.setPropertyInherited(false);
			iComment.setProperty(true);
			
		} else if (node.getCommentState() == Node.COMMENT_FALSE) {
			iComment.setPropertyInherited(false);
			iComment.setProperty(false);
		
		} else {
			iComment.setPropertyInherited(true);
			iComment.setProperty(node.isComment());
		}
		
		iComment.updateIcon();
	}