diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2a84f5b..b50fb97 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## 4.0.2 - UNRELEASED
+
+### Added
+- Added [`api`](https://plugins.doublesecretagency.com/google-maps/dynamic-maps/twig-php-methods/#tag-options) option to Twig/PHP `tag` method.
+- Added [`assets`](https://plugins.doublesecretagency.com/google-maps/dynamic-maps/twig-php-methods/#tag-options) option to Twig/PHP `tag` method.
+- Added [`callback`](https://plugins.doublesecretagency.com/google-maps/dynamic-maps/twig-php-methods/#tag-options) option to Twig/PHP `tag` method.
+
 ## 4.0.1 - 2021-02-26
 
 ### Added
diff --git a/docs/dynamic-maps/map-management.md b/docs/dynamic-maps/map-management.md
index f57d5b4..e13cc1b 100644
--- a/docs/dynamic-maps/map-management.md
+++ b/docs/dynamic-maps/map-management.md
@@ -48,8 +48,6 @@ Most (though not all) of these options are available across JavaScript, Twig, an
 | `infoWindowOptions`  | JS/Twig/PHP | Accepts any [`google.maps.InfoWindowOptions`](https://developers.google.com/maps/documentation/javascript/reference/info-window#InfoWindowOptions) properties.
 | `infoWindowTemplate` | Twig/PHP    | Template path to use for creating [info windows](/dynamic-maps/info-windows/). |
 | `field`              | Twig/PHP    | Address field(s) to be included on the map. (includes all by default)
-| `js`                 | Twig/PHP    | Whether to preload the necessary external JavaScript.
-| `callback`           | Twig/PHP    | JavaScript function to run after the map has loaded.
 
 :::warning Additional Details
 For more info, please consult either the [JavaScript method](/javascript/googlemaps.js/#map-locations-options) or the [Twig/PHP constructor](/models/dynamic-map-model/#construct-locations-options).
diff --git a/docs/dynamic-maps/twig-php-methods.md b/docs/dynamic-maps/twig-php-methods.md
index d402282..ef57281 100644
--- a/docs/dynamic-maps/twig-php-methods.md
+++ b/docs/dynamic-maps/twig-php-methods.md
@@ -23,15 +23,18 @@ The `tag` method also exists in [JavaScript](/dynamic-maps/javascript-methods/#t
 
 Regardless of whether you are using Twig or PHP, this will create a new `Twig\Markup` object.
 
-If you are working in Twig, you can use curly braces to output the map directly.
+If you are working in Twig, you can use curly braces to output the map directly. This produces a `<div>` element with a carefully constructed `data-dna` property.
 
 #### Arguments
 
- - `options` (_array_) - Configuration options for the rendered `<div>`.
+ - `options` (_array_) - Configuration options for the map container and its related JavaScript.
 
-| Option | Type   | Default | Description
-|:-------|:------:|:-------:|-------------
-| `init` | _bool_ | `true`  | Whether to automatically initialize the map via JavaScript.
+| Option     | Type     | Default | Description
+|:-----------|:--------:|:-------:|:------------
+| `api`      | _object_ | `{}`    | Optional parameters for the Google Maps API.
+| `assets`   | _bool_   | `true`  | Whether to preload the necessary JavaScript assets.
+| `init`     | _bool_   | `true`  | Whether to automatically initialize the map via JavaScript.
+| `callback` | _string_ | `null`  | JavaScript function to run after the map has loaded.
 
 The `init` option allows the map to be automatically rendered via JavaScript, after the `<div>` element has first been loaded onto the page via Twig.
 
diff --git a/docs/guides/clustering-markers.md b/docs/guides/clustering-markers.md
index a8e66f5..c23417e 100644
--- a/docs/guides/clustering-markers.md
+++ b/docs/guides/clustering-markers.md
@@ -1,54 +1,58 @@
 # Clustering Markers
 
+To implement [marker clustering](https://developers.google.com/maps/documentation/javascript/marker-clustering), an additional JavaScript library is required.
+
 ## Example
 
 Before any further explanation, here is the general snippet from which you can copy & paste to add marker clustering to your [dynamic map](/dynamic-maps/). It will likely require some minor adjustments for your site.
 
 ```twig
-{# Load the marker clustering library #}
+{# 1. Load the marker clustering library #}
 {% js 'https://unpkg.com/@googlemaps/markerclustererplus/dist/index.min.js' %}
 
-{# Create the JS callback function #}
+{# 2. Create the JS callback function #}
 {% js %}
-
     // Add marker clustering
     function addClustering() {
-
         // Get the map object
-        var mapObject = googleMaps.getMap('my-map');
-
+        var myMap = googleMaps.getMap('my-map');
         // Get map & markers
-        var map = mapObject._map;
-        var markers = Object.values(mapObject._markers);
-
+        var map = myMap._map;
+        var markers = Object.values(myMap._markers);
         // Cluster markers
         new MarkerClusterer(map, markers, {
             imagePath: 'https://developers.google.com/maps/documentation/javascript/examples/markerclusterer/m'
         });
-
     }
-    
 {% endjs %}
 
-{# Specify callback function in map options #}
-{% set options = {
-    id: 'my-map',
-    callback: 'addClustering',
+{# 3. Get all locations to appear on the map #}
+{% set locations = craft.entries.section('locations').all() %}
+
+{# 4. Specify the map ID #}
+{% set mapOptions = {
+    'id': 'my-map'
 } %}
 
-{# Get locations #}
-{% set locations = craft.entries.section('locations').all() %}
+{# 5. Specify the JS callback function #}
+{% set tagOptions = {
+    'callback': 'addClustering'
+} %}
 
-{# Display the map #}
-{{ googleMaps.map(locations, options).tag() }}
+{# 6. Display the map #}
+{{ googleMaps.map(locations, mapOptions).tag(tagOptions) }}
 ```
 
 ## Instructions
 
 1. First, you must **load the marker clustering library**. The example above points to a CDN, but you could alternatively store a local copy of the library.
 
-2. You then need to **create the JS callback function**. If desired, this function could be stored in a separate `.js` file. Be sure it gets loaded _after_ the plugin loads [the `googlemaps.js` file](/javascript/googlemaps.js/).
+2. You then need to **create the JS callback function**. If desired, this function could be stored in a separate `.js` file. Be sure it gets loaded _after_ the plugin loads the [`googlemaps.js` file](/javascript/googlemaps.js/).
+
+3. **Get the locations**, just as you normally would.  It's very likely that you already have this part worked out. If not, check out the documentation for [creating a dynamic map...](/dynamic-maps/)
+
+4. **Specify the map's `id`** in the [`map` options](/dynamic-maps/map-management/#map-locations-options). This makes it easy to reference the map in JavaScript.
 
-3. **Specify the `callback` function in the map's [options](/models/dynamic-map-model/#construct-locations-options)**. If you are referencing a named function, simply pass the name of the function. It's also possible to pass an anonymous function (as a string).
+5. **Specify the `callback` function** in the [`tag` options](/dynamic-maps/twig-php-methods/#tag-options). If you are referencing a named function, specify the name of the function. Or you can pass an anonymous function (as a _string_ in Twig/PHP).
 
-4. Lastly, you'll want to **get the locations** and **display the map**. It's very likely that you already have this part worked out. If not, check out the documentation for [creating a dynamic map...](/dynamic-maps/)
+6. Lastly, **display the map** by providing the `locations`, `mapOptions`, and `tagOptions`.
diff --git a/docs/guides/required-js-assets.md b/docs/guides/required-js-assets.md
index 27b0e31..989897a 100644
--- a/docs/guides/required-js-assets.md
+++ b/docs/guides/required-js-assets.md
@@ -22,22 +22,13 @@ In addition to the Google Maps API reference, there are two [JavaScript files](/
 
 ## Disable Automatic Loading
 
-To prevent the required assets from being automatically loaded, simply set the `js` option to `false` when creating a map.
+If necessary, you can prevent the required assets from being loaded automatically.  When the `tag` method is appended, simply set the `assets` value to `false`.
 
-:::code
 ```twig
-{% set map = googleMaps.map(locations, {
-    'js': false
-}) %}
-```
-```php
-$map = GoogleMaps::map($locations, [
-    'js' => false
-]);
+{{ googleMaps.map(locations).tag({'assets': false}) }}
 ```
-:::
 
-For more info, see the complete [list of options...](/dynamic-maps/map-management/#map-locations-options)
+For more info, see the complete [list of options...](/dynamic-maps/twig-php-methods/#tag-options)
 
 ## Loaded Manually
 
diff --git a/docs/models/dynamic-map-model.md b/docs/models/dynamic-map-model.md
index 7911437..df2d873 100644
--- a/docs/models/dynamic-map-model.md
+++ b/docs/models/dynamic-map-model.md
@@ -49,8 +49,6 @@ Once you have the map object in hand, you can then chain other methods to furthe
 | `infoWindowOptions`  | _object_          | _null_  | Accepts any [`google.maps.InfoWindowOptions`](https://developers.google.com/maps/documentation/javascript/reference/info-window#InfoWindowOptions) properties.
 | `infoWindowTemplate` | _string_          | _null_  | Template path to use for creating [info windows](/dynamic-maps/info-windows/).
 | `field`              | _string_\|_array_ | _null_  | Address field(s) to be included on the map. (includes all by default)
-| `js`                 | _bool_            | _true_  | Whether to preload the necessary external JavaScript.
-| `callback`           | _string_          | _null_  | JavaScript function to run after the map has finished loading.
 
 #### Returns
 
@@ -352,9 +350,12 @@ Renders the necessary `<div>` container to hold the map. The final `<div>` will
 
  - `$options` (_array_) - Configuration options for the rendered `<div>`.
 
-| Option | Type   | Default | Description
-|:-------|:------:|:-------:|-------------
-| `init` | _bool_ | `true`  | Whether to automatically initialize the map via JavaScript.
+| Option     | Type     | Default | Description
+|:-----------|:--------:|:-------:|:------------
+| `api`      | _object_ | `{}`    | Optional parameters for the Google Maps API.
+| `assets`   | _bool_   | `true`  | Whether to preload the necessary JavaScript assets.
+| `init`     | _bool_   | `true`  | Whether to automatically initialize the map via JavaScript.
+| `callback` | _string_ | `null`  | JavaScript function to run after the map has loaded.
 
 By setting the `init` option to `false`, the map will not be automatically initialized in JavaScript. It must therefore be [manually initialized in JavaScript](/dynamic-maps/javascript-methods/#init-mapid-null-callback-null) when the page has completely rendered.
 
diff --git a/docs/updating-from-smart-map/customizing-the-map-in-twig.md b/docs/updating-from-smart-map/customizing-the-map-in-twig.md
index 3af64dc..5b3e6a4 100644
--- a/docs/updating-from-smart-map/customizing-the-map-in-twig.md
+++ b/docs/updating-from-smart-map/customizing-the-map-in-twig.md
@@ -20,10 +20,8 @@ Please take a closer look to see which items will need to be updated, added, or
 
 | Option               |    | What Changed
 |:---------------------|----|:-------------
-| `mapOptions`         | ⭐ | **ADDED!** (new in the Google Maps plugin)
 | `styles`             | ⭐ | **ADDED!** (new in the Google Maps plugin)
-| `js`                 | ⭐ | **ADDED!** (new in the Google Maps plugin)
-| `callback`           | ⭐ | **ADDED!** (new in the Google Maps plugin)
+| `mapOptions`         | ⭐ | **ADDED!** (new in the Google Maps plugin)
 | `maptype`            | ❌ | REMOVED (configure via `mapOptions` instead)
 | `scale`              | ❌ | REMOVED (configure via `mapOptions` instead)
 | `scrollwheel`        | ❌ | REMOVED (configure via `mapOptions` instead)
diff --git a/src/models/DynamicMap.php b/src/models/DynamicMap.php
index 39e7a16..1123a43 100644
--- a/src/models/DynamicMap.php
+++ b/src/models/DynamicMap.php
@@ -22,6 +22,7 @@
 use craft\web\View;
 use doublesecretagency\googlemaps\fields\AddressField;
 use doublesecretagency\googlemaps\GoogleMapsPlugin;
+use doublesecretagency\googlemaps\helpers\GoogleMaps;
 use doublesecretagency\googlemaps\helpers\MapHelper;
 use doublesecretagency\googlemaps\web\assets\JsApiAsset;
 use Twig\Error\LoaderError;
@@ -84,19 +85,9 @@ public function __construct($locations = [], array $options = [], array $config
         // Set internal map ID
         $this->id = $options['id'];
 
-        // Unless otherwise specified, preload the necessary JavaScript
-        if (!isset($options['js']) || !is_bool($options['js'])) {
-            $options['js'] = true;
-        }
-
         // Get view service
         $view = Craft::$app->getView();
 
-        // Load assets
-        if ($options['js']) {
-            $view->registerAssetBundle(JsApiAsset::class);
-        }
-
         // Whether devMode is enabled
         $inDevMode = Craft::$app->getConfig()->general->devMode;
 
@@ -119,7 +110,7 @@ public function __construct($locations = [], array $options = [], array $config
             ];
 
             // Prevent conflict between map ID and marker IDs
-            unset($options['id'], $options['js']);
+            unset($options['id']);
 
             // Create markers along with their corresponding info windows
             $this->_initInfoWindows($locations, $options);
@@ -384,33 +375,48 @@ public function tag(array $options = []): Markup
             throw new Exception('Model misconfigured. The map DNA is empty.');
         }
 
-        // Alias map from DNA
-        $map =& $this->_dna[0];
-
-        // If the first item is not a map, throw an error
-        if ('map' != $map['type']) {
+        // If the first DNA item is not a map, throw an error
+        if ('map' != ($this->_dna[0]['type'] ?? false)) {
             throw new Exception('Map model misconfigured. The chain must begin with a `map()` segment.');
         }
 
-        // Compile map container
-        $html = Html::modifyTagAttributes('<div>Loading map...</div>', [
-            'id' => $this->id,
-            'class' => 'gm-map',
-            'data-dna' => Json::encode($this->_dna),
-        ]);
+        // Get view service
+        $view = Craft::$app->getView();
+
+        // Unless otherwise specified, preload the necessary JavaScript assets
+        if (!isset($options['assets']) || !is_bool($options['assets'])) {
+            $options['assets'] = true;
+        }
+
+        // If no additional API parameters were specified, default to empty array
+        if (!isset($options['api']) || !is_array($options['api'])) {
+            $options['api'] = [];
+        }
+
+        // If we're permitted to load JS assets
+        if ($options['assets']) {
+            // Load assets with optional API parameters
+            GoogleMaps::loadAssets($options['api']);
+        }
 
         // Initialize the map (unless intentionally suppressed)
         if ($options['init'] ?? true) {
             // Get optional callback
-            $callback = ($map['options']['callback'] ?? 'null');
+            $callback = ($options['callback'] ?? 'null');
             // Initialize Google Maps after page has loaded
             $googleMapsInit = "googleMaps.init('{$this->id}', {$callback})";
             $js = "addEventListener('load', function () {{$googleMapsInit}});";
             // Register JS at the end of the page
-            $view = Craft::$app->getView();
             $view->registerJs($js, $view::POS_END);
         }
 
+        // Compile map container
+        $html = Html::modifyTagAttributes('<div>Loading map...</div>', [
+            'id' => $this->id,
+            'class' => 'gm-map',
+            'data-dna' => Json::encode($this->_dna),
+        ]);
+
         // Return Markup
         return Template::raw($html);
     }