- * @cfg {String} theme default (or empty) | glow
- * @cfg {Boolean} inverse false | true
- * @cfg {Boolean} toggle false | true
- * @cfg {String} ontext text for on toggle state
- * @cfg {String} offtext text for off toggle state
- * @cfg {Boolean} defaulton true | false
- * @cfg {Boolean} preventDefault (true | false) default true
- * @cfg {Boolean} removeClass true | false remove the standard class..
- * @cfg {String} target (_self|_blank|_parent|_top)target for a href.
+ * @cfg {String} theme (default|glow)
+ * @cfg {Boolean} inverse dark themed version
+ * @cfg {Boolean} toggle is it a slidy toggle button
+ * @cfg {Boolean} pressed  default null - if the button ahs active state
+ * @cfg {String} ontext text for on slidy toggle state
+ * @cfg {String} offtext text for off slidy toggle state
+ * @cfg {Boolean} preventDefault default true (stop click event triggering the URL if it's a link.)
+ * @cfg {Boolean} removeClass remove the standard class..
+ * @cfg {String} target (_self|_blank|_parent|_top|other) target for a href.
+ * @cfg {Boolean} grpup if parent is a btn group - then it turns it into a toogleGroup.