Add ImageMagick configuration (#226)

* Add ImageMagick configuration

* Update Index.rst

* Adjust wording for configuring Imagemagick

Co-authored-by: Tom Warwick <[email protected]>

Author: 2 people

Diff for: Documentation/In-depth/TheInstallTool/Index.rst

@@ -196,3 +196,17 @@ and displays hints if something goes wrong.
    might need to adjust the settings (via "Settings" > "Configuration Presets"
    > "Image Handling").
 
+After the last step of the installation you must verify the image handling settings
+under the configuration presets for Image Magick and Graphics Magick.
+For example in Windows, in the field left of the button :guilabel:`Find executable in this directory` you must enter 
+a path to an Image Magick installation. Do not use quotes around it.  ::
+
+    C:\Program Files\ImageMagick-7.0.11-Q8
+
+After clicking on the button to the right of it, you should see a similar message:
+
+    An ImageMagick version 6 or higher was found in path C:\Program Files\ImageMagick-7.0.11-Q8.
+
+Then click on its radio button and click on the :guilabel:`Activate` button at the bottom of the page.
+The path where the executable file is located, gets stored in the variable `$GLOBALS['TYPO3_CONF_VARS']['GFX']['processor_path']` .
+