add screen titles

Author: jbritain

src/content/docs/current/Reference/Shaders.Properties/shader_settings.mdx

@@ -175,7 +175,7 @@ option.SSBO = Ambient Occlusion
 ```
 
 #### Value Labels
-Value labels replace the display name of a specific value of a non-boolean shader option. They can be specified with `value.<option_name>.<value> = <value_label>` in a lang file. Replace `<option_name>` with the options name as defined in shaders.properties, `<value>` with value to replace, and `<value_label>` with the user-friendly value label to be displayed in the shader options screen. For example:
+Value labels replace the display name for a value of a non-boolean shader option. They can be specified with `value.<option_name>.<value> = <value_label>` in a lang file. Replace `<option_name>` with the options name as defined in shaders.properties, `<value>` with value to replace, and `<value_label>` with the user-friendly value label to be displayed in the shader options screen. For example:
 
 ```properties title=".lang file"
 value.Shadow_Type.0=off
@@ -191,6 +191,12 @@ prefix.Shadow_Type = (
 suffix.Shadow_Type = )
 ```
 
+#### Screen Labels
+Screen labels replace the display name of a sub-screen. They are specified with `screen.<screen_name> = <title>`. For example
+```properties title=".lang file"
+screen.ATMOSPHERICS = Atmospherics
+```
+
 #### Option Tooltips
 Option tooltips are shown in a tooltip when the user hovers over the shader option. They can be specified with `option.<option_name>.comment = <comment>` in a lang file. Replace `<option_name>` with the options name as defined in shaders.properties, and `<comment>` with the tooltip comment to be displayed in the shader options screen. For example: