diff --git a/docs/4.0/getting-started/theming.md b/docs/4.0/getting-started/theming.md
index 4f201c88da3ecbcf65a24187972606382b7ab47e..d52f6e260be762be152fc77ae170b401a2a4fabb 100644
--- a/docs/4.0/getting-started/theming.md
+++ b/docs/4.0/getting-started/theming.md
@@ -102,9 +102,20 @@ $theme-colors: (
 
 ## Sass options
 
-**TODO:**
-- pull in the `options.md` section here
-- create a redirect from there
+Customize Bootstrap 4 with our built-in custom variables file and easily toggle global CSS preferences with new `$enable-*` Sass variables. Override a variable's value and recompile with `npm run test` as needed.
+
+You can find and customize these variables for key global options in our `_variables.scss` file.
+
+| Variable                    | Values                             | Description                                                                            |
+| --------------------------- | ---------------------------------- | -------------------------------------------------------------------------------------- |
+| `$spacer`                   | `1rem` (default), or any value > 0 | Specifies the default spacer value to programmatically generate our [spacer utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/spacing/). |
+| `$enable-rounded`           | `true` (default) or `false`        | Enables predefined `border-radius` styles on various components.                       |
+| `$enable-shadows`           | `true` or `false` (default)        | Enables predefined `box-shadow` styles on various components.                          |
+| `$enable-gradients`         | `true` or `false` (default)        | Enables predefined gradients via `background-image` styles on various components.      |
+| `$enable-transitions`       | `true` (default) or `false`        | Enables predefined `transition`s on various components.                                |
+| `$enable-hover-media-query` | `true` or `false` (default)        | ...                                                                                    |
+| `$enable-grid-classes`      | `true` (default) or `false`        | Enables the generation of CSS classes for the grid system (e.g., `.container`, `.row`, `.col-md-1`, etc.).     |
+| `$enable-print-styles`      | `true` (default) or `false`        | Enables styles for optimizing printing.                                |
 
 ## Colors