diff --git a/src/__celerity_resource_map__.php b/src/__celerity_resource_map__.php
index ee146d88a5..dfd228376a 100644
--- a/src/__celerity_resource_map__.php
+++ b/src/__celerity_resource_map__.php
@@ -28,25 +28,11 @@ celerity_register_resource_map(array(
     'disk' => '/rsrc/image/credit_cards.png',
     'type' => 'png',
   ),
-  '/rsrc/image/custom/example_facebook.png' =>
+  '/rsrc/image/glyph_sprite.png' =>
   array(
-    'hash' => '062911a848dd7b58159d4184488ecac4',
-    'uri' => '/res/062911a8/rsrc/image/custom/example_facebook.png',
-    'disk' => '/rsrc/image/custom/example_facebook.png',
-    'type' => 'png',
-  ),
-  '/rsrc/image/custom/example_rainbow.png' =>
-  array(
-    'hash' => '7af08c16d969a2d63b4acdbd5cee2e8f',
-    'uri' => '/res/7af08c16/rsrc/image/custom/example_rainbow.png',
-    'disk' => '/rsrc/image/custom/example_rainbow.png',
-    'type' => 'png',
-  ),
-  '/rsrc/image/custom/example_template.png' =>
-  array(
-    'hash' => '9971fe1adb16682a18f9b588c4fc051b',
-    'uri' => '/res/9971fe1a/rsrc/image/custom/example_template.png',
-    'disk' => '/rsrc/image/custom/example_template.png',
+    'hash' => '0a1ea7c048be9f0b76ab2c807a9a1c0d',
+    'uri' => '/res/0a1ea7c0/rsrc/image/glyph_sprite.png',
+    'disk' => '/rsrc/image/glyph_sprite.png',
     'type' => 'png',
   ),
   '/rsrc/image/grippy_texture.png' =>
@@ -888,18 +874,6 @@ celerity_register_resource_map(array(
     ),
     'disk' => '/rsrc/js/application/core/behavior-buoyant.js',
   ),
-  'javelin-behavior-burn-chart' =>
-  array(
-    'uri' => '/res/0bc23e4d/rsrc/js/application/maniphest/behavior-burn-chart.js',
-    'type' => 'js',
-    'requires' =>
-    array(
-      0 => 'javelin-behavior',
-      1 => 'javelin-dom',
-      2 => 'javelin-vector',
-    ),
-    'disk' => '/rsrc/js/application/maniphest/behavior-burn-chart.js',
-  ),
   'javelin-behavior-countdown-timer' =>
   array(
     'uri' => '/res/5ee9cb13/rsrc/js/application/countdown/timer.js',
@@ -1221,7 +1195,7 @@ celerity_register_resource_map(array(
   ),
   'javelin-behavior-line-chart' =>
   array(
-    'uri' => '/res/653743c8/rsrc/js/application/maniphest/behavior-line-chart.js',
+    'uri' => '/res/1aa5ac88/rsrc/js/application/maniphest/behavior-line-chart.js',
     'type' => 'js',
     'requires' =>
     array(
@@ -1486,6 +1460,17 @@ celerity_register_resource_map(array(
     ),
     'disk' => '/rsrc/js/application/phriction/phriction-document-preview.js',
   ),
+  'javelin-behavior-placeholder' =>
+  array(
+    'uri' => '/res/7dc26990/rsrc/js/application/core/behavior-placeholder.js',
+    'type' => 'js',
+    'requires' =>
+    array(
+      0 => 'javelin-behavior',
+      1 => 'javelin-dom',
+    ),
+    'disk' => '/rsrc/js/application/core/behavior-placeholder.js',
+  ),
   'javelin-behavior-projects-resource-editor' =>
   array(
     'uri' => '/res/ffdde7d9/rsrc/js/application/projects/projects-resource-editor.js',
@@ -2179,6 +2164,15 @@ celerity_register_resource_map(array(
     ),
     'disk' => '/rsrc/css/application/flag/flag.css',
   ),
+  'phabricator-glyph-css' =>
+  array(
+    'uri' => '/res/52f0dc90/rsrc/css/application/base/glyph.css',
+    'type' => 'css',
+    'requires' =>
+    array(
+    ),
+    'disk' => '/rsrc/css/application/base/glyph.css',
+  ),
   'phabricator-jump-nav' =>
   array(
     'uri' => '/res/8bdc0fc3/rsrc/css/application/directory/phabricator-jump-nav.css',
@@ -2358,7 +2352,7 @@ celerity_register_resource_map(array(
   ),
   'phabricator-standard-page-view' =>
   array(
-    'uri' => '/res/de559ba2/rsrc/css/application/base/standard-page-view.css',
+    'uri' => '/res/48118f6f/rsrc/css/application/base/standard-page-view.css',
     'type' => 'css',
     'requires' =>
     array(
@@ -2613,7 +2607,7 @@ celerity_register_resource_map(array(
 ), array(
   'packages' =>
   array(
-    '78836d86' =>
+    '12ecfc95' =>
     array(
       'name' => 'core.pkg.css',
       'symbols' =>
@@ -2642,7 +2636,7 @@ celerity_register_resource_map(array(
         21 => 'phabricator-flag-css',
         22 => 'aphront-error-view-css',
       ),
-      'uri' => '/res/pkg/78836d86/core.pkg.css',
+      'uri' => '/res/pkg/12ecfc95/core.pkg.css',
       'type' => 'css',
     ),
     'f363b322' =>
@@ -2809,20 +2803,20 @@ celerity_register_resource_map(array(
   'reverse' =>
   array(
     'aphront-attached-file-view-css' => '7839ae2d',
-    'aphront-crumbs-view-css' => '78836d86',
-    'aphront-dialog-view-css' => '78836d86',
-    'aphront-error-view-css' => '78836d86',
-    'aphront-form-view-css' => '78836d86',
+    'aphront-crumbs-view-css' => '12ecfc95',
+    'aphront-dialog-view-css' => '12ecfc95',
+    'aphront-error-view-css' => '12ecfc95',
+    'aphront-form-view-css' => '12ecfc95',
     'aphront-headsup-action-list-view-css' => '96bc37d6',
-    'aphront-headsup-view-css' => '78836d86',
-    'aphront-list-filter-view-css' => '78836d86',
-    'aphront-pager-view-css' => '78836d86',
-    'aphront-panel-view-css' => '78836d86',
-    'aphront-side-nav-view-css' => '78836d86',
-    'aphront-table-view-css' => '78836d86',
-    'aphront-tokenizer-control-css' => '78836d86',
-    'aphront-tooltip-css' => '78836d86',
-    'aphront-typeahead-control-css' => '78836d86',
+    'aphront-headsup-view-css' => '12ecfc95',
+    'aphront-list-filter-view-css' => '12ecfc95',
+    'aphront-pager-view-css' => '12ecfc95',
+    'aphront-panel-view-css' => '12ecfc95',
+    'aphront-side-nav-view-css' => '12ecfc95',
+    'aphront-table-view-css' => '12ecfc95',
+    'aphront-tokenizer-control-css' => '12ecfc95',
+    'aphront-tooltip-css' => '12ecfc95',
+    'aphront-typeahead-control-css' => '12ecfc95',
     'differential-changeset-view-css' => '96bc37d6',
     'differential-core-view-css' => '96bc37d6',
     'differential-inline-comment-editor' => 'f4bbbd84',
@@ -2888,15 +2882,15 @@ celerity_register_resource_map(array(
     'javelin-workflow' => 'f363b322',
     'maniphest-task-summary-css' => '7839ae2d',
     'maniphest-transaction-detail-css' => '7839ae2d',
-    'phabricator-app-buttons-css' => '78836d86',
+    'phabricator-app-buttons-css' => '12ecfc95',
     'phabricator-content-source-view-css' => '96bc37d6',
-    'phabricator-core-buttons-css' => '78836d86',
-    'phabricator-core-css' => '78836d86',
-    'phabricator-directory-css' => '78836d86',
+    'phabricator-core-buttons-css' => '12ecfc95',
+    'phabricator-core-css' => '12ecfc95',
+    'phabricator-directory-css' => '12ecfc95',
     'phabricator-drag-and-drop-file-upload' => 'f4bbbd84',
     'phabricator-dropdown-menu' => 'f363b322',
-    'phabricator-flag-css' => '78836d86',
-    'phabricator-jump-nav' => '78836d86',
+    'phabricator-flag-css' => '12ecfc95',
+    'phabricator-jump-nav' => '12ecfc95',
     'phabricator-keyboard-shortcut' => 'f363b322',
     'phabricator-keyboard-shortcut-manager' => 'f363b322',
     'phabricator-menu-item' => 'f363b322',
@@ -2904,11 +2898,11 @@ celerity_register_resource_map(array(
     'phabricator-paste-file-upload' => 'f363b322',
     'phabricator-prefab' => 'f363b322',
     'phabricator-project-tag-css' => '7839ae2d',
-    'phabricator-remarkup-css' => '78836d86',
+    'phabricator-remarkup-css' => '12ecfc95',
     'phabricator-shaped-request' => 'f4bbbd84',
-    'phabricator-standard-page-view' => '78836d86',
+    'phabricator-standard-page-view' => '12ecfc95',
     'phabricator-tooltip' => 'f363b322',
-    'phabricator-transaction-view-css' => '78836d86',
-    'syntax-highlighting-css' => '78836d86',
+    'phabricator-transaction-view-css' => '12ecfc95',
+    'syntax-highlighting-css' => '12ecfc95',
   ),
 ));
diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
index 3b8cc94eb4..0de8f96484 100644
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -467,6 +467,7 @@ phutil_register_library_map(array(
     'HeraldValueTypeConfig' => 'applications/herald/config/HeraldValueTypeConfig.php',
     'Javelin' => 'infrastructure/javelin/Javelin.php',
     'JavelinReactorExample' => 'applications/uiexample/examples/JavelinReactorExample.php',
+    'JavelinUIExample' => 'applications/uiexample/examples/JavelinUIExample.php',
     'JavelinViewExample' => 'applications/uiexample/examples/JavelinViewExample.php',
     'JavelinViewExampleServerView' => 'applications/uiexample/examples/JavelinViewExampleServerView.php',
     'LiskDAO' => 'infrastructure/storage/lisk/LiskDAO.php',
@@ -1525,6 +1526,7 @@ phutil_register_library_map(array(
     'HeraldTranscriptController' => 'HeraldController',
     'HeraldTranscriptListController' => 'HeraldController',
     'JavelinReactorExample' => 'PhabricatorUIExample',
+    'JavelinUIExample' => 'PhabricatorUIExample',
     'JavelinViewExample' => 'PhabricatorUIExample',
     'JavelinViewExampleServerView' => 'AphrontView',
     'LiskEphemeralObjectException' => 'Exception',
diff --git a/src/applications/uiexample/examples/JavelinUIExample.php b/src/applications/uiexample/examples/JavelinUIExample.php
new file mode 100644
index 0000000000..81cfed8fb1
--- /dev/null
+++ b/src/applications/uiexample/examples/JavelinUIExample.php
@@ -0,0 +1,59 @@
+<?php
+
+/*
+ * Copyright 2012 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+final class JavelinUIExample extends PhabricatorUIExample {
+
+  public function getName() {
+    return 'Javelin UI';
+  }
+
+  public function getDescription() {
+    return 'Here are some Javelin UI elements that you could use.';
+  }
+
+  public function renderExample() {
+    $request = $this->getRequest();
+    $user = $request->getUser();
+
+    $placeholder_id = celerity_generate_unique_node_id();
+
+    Javelin::initBehavior(
+      'placeholder',
+      array(
+        'id'    => $placeholder_id,
+        'text'  => 'This is a placeholder',
+      ));
+
+    $form = id(new AphrontFormView())
+      ->setUser($user)
+      ->appendChild(
+        id(new AphrontFormTextControl())
+          ->setLabel('Placeholder')
+          ->setID($placeholder_id))
+      ->appendChild(
+        id(new AphrontFormSubmitControl())
+          ->setValue('Submit'));
+
+    $panel = new AphrontPanelView();
+    $panel->setHeader('A Form');
+    $panel->setWidth(AphrontPanelView::WIDTH_FORM);
+    $panel->appendChild($form);
+
+    return $panel;
+  }
+}
diff --git a/webroot/rsrc/css/application/base/standard-page-view.css b/webroot/rsrc/css/application/base/standard-page-view.css
index 619f884f88..58546d42e9 100644
--- a/webroot/rsrc/css/application/base/standard-page-view.css
+++ b/webroot/rsrc/css/application/base/standard-page-view.css
@@ -304,3 +304,11 @@ a.handle-disabled {
   background: #eeeeee;
   border-top: 1px solid #dddddd;
 }
+
+
+/**
+ * Placeholder text added to inputs by the "placeholder" behavior.
+ */
+.jx-placeholder {
+  color: #888888;
+}
diff --git a/webroot/rsrc/js/application/core/behavior-placeholder.js b/webroot/rsrc/js/application/core/behavior-placeholder.js
new file mode 100644
index 0000000000..baff60482c
--- /dev/null
+++ b/webroot/rsrc/js/application/core/behavior-placeholder.js
@@ -0,0 +1,60 @@
+/**
+ * @provides javelin-behavior-placeholder
+ * @requires javelin-behavior
+ *           javelin-dom
+ */
+
+/**
+ * Add placeholder text to an input. Config are:
+ *
+ *   - `id` (Required) ID of the element to add placeholder text to.
+ *   - `text` (Required) Text to show.
+ *
+ * While the element is displaying placeholder text, the class `jx-placeholder`
+ * is added to it. Normally, you use a lower-contrast color to indicate that
+ * this text is instructional:
+ *
+ *   .jx-placeholder {
+ *     color: #888888;
+ *   }
+ *
+ * @group ui
+ */
+JX.behavior('placeholder', function(config) {
+  var input = JX.$(config.id);
+  var placeholder_visible = false;
+
+  function update(show_placeholder) {
+    placeholder_visible = show_placeholder;
+    JX.DOM.alterClass(input, 'jx-placeholder', placeholder_visible);
+  }
+
+  function onfocus() {
+    if (placeholder_visible) {
+      input.value = '';
+      update(false);
+    }
+  }
+
+  function onblur() {
+    if (!input.value) {
+      input.value = config.text;
+      update(true);
+    }
+  }
+
+  JX.DOM.listen(input, 'focus', null, onfocus);
+  JX.DOM.listen(input, 'blur', null, onblur);
+
+  // When the user submits the form, remove the placeholder text (so it doesn't
+  // get submitted to the server) and then restore it after the submit finishes.
+  JX.DOM.listen(input.form, 'submit', null, function() {
+    onfocus();
+    setTimeout(onblur, 0);
+  });
+
+  // If the element isn't currently focused, show the placeholder text.
+  if (document.activeElement != input) {
+    onblur();
+  }
+});