Merge pull request #453 from opengisch/itsakifa-patch-2

Update outside-layers.en.md

documentation/how-to/outside-layers.en.md

@@ -9,6 +9,7 @@ It is possible to use a layer which is stored outside the project folder.
 
 This is useful if a basemap is used in more than one project, for example a large orthophoto.
 In this case, you can share this dataset among different projects.
+Also large vector data files that are not modified can be shared that way. The features and their attributes remain identifiable.
 
 ## Add a layer outside of exported project folder
 :material-monitor: Desktop preparation