[1557] Add read-only model upload in the user documentation

Bug: #1557
Signed-off-by: Gwendal Daniel <gwendal.daniel@obeosoft.com>

Author: gdaniel

CHANGELOG.adoc

@@ -106,6 +106,7 @@ Resources are now considered read-only if:
 * They are textual SysML files imported as read-only
 * They are standard libraries (SysML and KerML)
 All the other resources are read-write.
+- https://github.com/eclipse-syson/syson/issues/1557[#1557] [syson] Add read-only model upload in the user documentation.
 
 === New features
 

doc/content/modules/user-manual/assets/images/hands-on-upload-model.png

@@ -44,11 +44,18 @@ To upload a model from a file previously exported, follow these steps:
 . Click the `Upload` button at the top of the {explorer} in the toolbar.
 . It opens the `Upload Model` modal.
 . Select a model from your file system.
+. Select the import mode for your model: read-write (default), or read-only
 +
 image::hands-on-upload-model.png[Upload model]
 +
 . The uploaded model is automatically created and opened.
 
+[NOTE]
+====
+Read-only models cannot be renamed and their content cannot be modified.
+Note that it is possible to delete a read-only model.
+====
+
 [#rename-model]
 == Rename a model
 

doc/content/modules/user-manual/pages/hands-on/how-tos/model-management.adoc

@@ -118,6 +118,7 @@ Resources are now considered read-only if:
 * They are textual SysML files imported as read-only
 * They are standard libraries (SysML and KerML)
 All the other resources are read-write.
+- Update the user documentation with information on read-only model upload.
 
 == Dependency update