It would be nice to have an option to enable "down to unfold" feature in sublime mode.

diff --git a/public/js/lib/editor/index.js b/public/js/lib/editor/index.js
--- a/public/js/lib/editor/index.js
+++ b/public/js/lib/editor/index.js
@@ -85,6 +85,10 @@ export default class Editor {
       'Cmd-Right': 'goLineRight',
       Home: 'goLineLeftSmart',
       End: 'goLineRight',
+      'Down': function(cm) {
+        cm.moveV(1, "line")
+        cm.execCommand('unfold')
+      },
       'Ctrl-C': function (cm) {
         if (!isMac && cm.getOption('keyMap').substr(0, 3) === 'vim') {
           document.execCommand('copy')