DOCS: adds autostart page

doc/docportal/advanced_topics/autostart.rst

@@ -0,0 +1,22 @@
+=========================
+Autostart
+=========================
+
+Use the autostart feature to automatically start the game located in the same folder as the ScummVM executable, as long as it is a game supported by ScummVM. It is the equivalent of using the ``--path`` and ``--auto-run`` :doc:`command line options <../advanced_topics/command_line>`. 
+
+There are two ways to use the autostart feature:
+
+- Rename the executable file to ``scummvm-auto.xxx``, where ``xxx`` is the file type extension. 
+- Create an empty file named ``scummvm-autorun`` in the same folder as both the executable and the chosen game. Either leave the file empty, or use it to specify any further command line options. Specify one option per line. 
+
+Example of a scummvm-autorun file
+===================================
+
+.. code::
+
+    --fullscreen
+    --shader=crt/crt-lottes.glslp
+
+    
+
+

doc/docportal/index.rst

@@ -52,11 +52,13 @@
       :glob:
       :hidden:
 
+      advanced_topics/autostart
       advanced_topics/command_line
       advanced_topics/configuration_file
       advanced_topics/understand_audio
       advanced_topics/understand_graphics
       advanced_topics/understand_search_box
+      
 
 .. toctree::
       :caption: Help
@@ -200,6 +202,9 @@ In this section, we also take a deep dive into understanding the graphics and au
 
       Advanced features
       ^^^^^^^^^^^^^^^^^^^^
+      
+      :doc:`advanced_topics/autostart`
+      
       :doc:`advanced_topics/configuration_file`
 
       :doc:`advanced_topics/command_line`
@@ -213,6 +218,8 @@ In this section, we also take a deep dive into understanding the graphics and au
 
       :doc:`The graphics settings <advanced_topics/understand_graphics>`
 
+      :doc:`The search box <advanced_topics/understand_search_box>`
+
 
 
 Getting help