- Docs: Notes on render usage and duplicates

Author: brettz9

example/index.html

@@ -14,6 +14,15 @@
 
   createApp({
     render () {
+      // Per devs in Vue Discord, seems not possible to use strings with
+      //  component elements like `<AlertComponent>` (whether within
+      //  `template`, `render`, or `setup`), but this `createElement`
+      //  syntax (see https://vuejs.org/v2/guide/render-function.html#createElement-Arguments )
+      //  is at least HTML-like and decent enough for rapid prototyping
+      // These docs also seems to indicate that duplicates are not
+      //  allowed, suggesting use of factory functions instead, but
+      //  not seeming to get errors in Vue 3 here if using multiple instances
+      //  at least for the progress indicator
       return h('div', [
         'Test:',
         h(ProgressIndicatorComponent),