comment.

lib/widget.js

@@ -257,6 +257,12 @@ Screen.prototype.alloc = function() {
 };
 
 Screen.prototype.render = function() {
+  // TODO: Could possibly drop .dirty and just clear the `lines` buffer every
+  // time before a screen.render. This way clearRegion doesn't have to be
+  // called in arbitrary places for the sake of clearing a spot where an
+  // element used to be (e.g. when an element moves or is hidden). There could
+  // be some overhead though.
+  // this.screen.clearRegion(0, this.cols, 0, this.rows);
   this.children.forEach(function(el) {
     el.render();
   });
@@ -494,6 +500,10 @@ function Element(options) {
     height: options.height || null
   };
 
+  // TODO: Possibly add padding/margins?
+  // this.position.padding = options.padding || 0;
+  // this.position.margin = options.margin || 0;
+
   this.hidden = options.hidden || false;
   this.fg = options.fg || 0x1ff;
   this.bg = options.bg || 0x1ff;