New entry for The PerspectiveSwitcher respects the

IPresentationEngine.NO_MOVE tag

Author: vogella

news/4.39/platform_isv.md

@@ -2,10 +2,30 @@
 
 A special thanks to everyone who [contributed to Eclipse-Platform](acknowledgements.md#eclipse-platform) or [contributed to Equinox](acknowledgements.md#equinox) in this release!
 
-<!--
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 ## Platform Changes
--->
+
+### Perspective Switcher Respects IPresentationEngine.NO_MOVE
+
+<details>
+<summary>Contributors</summary>
+
+- [Lars Vogel](https://github.com/vogella)
+</details>
+
+The perspective switcher now respects the `IPresentationEngine.NO_MOVE` tag.
+This enhancement prevents drag-and-drop reordering of perspective items if the perspective switcher tool control has this tag applied.
+Developers can programmatically lock or unlock this reordering feature by adding or removing the `IPresentationEngine.NO_MOVE` tag to the tool control.
+
+Example usage (programmatic):
+
+```java
+// To lock the perspective switcher reordering:
+toolControl.getTags().add(IPresentationEngine.NO_MOVE);
+// To unlock:
+toolControl.getTags().remove(IPresentationEngine.NO_MOVE);
+```
+
 
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