diff --git a/.antora/modules/specification/nav-openmaterial.adoc b/.antora/modules/specification/nav-openmaterial.adoc
index 5634248..3ca741b 100644
--- a/.antora/modules/specification/nav-openmaterial.adoc
+++ b/.antora/modules/specification/nav-openmaterial.adoc
@@ -1,27 +1,5 @@
 
-//Deprecated, use 'OpenMATERIAL/content/nav-openmaterial.adoc' instead.
+// Deprecated, use 'OpenMATERIAL/content/nav-openmaterial.adoc' instead.
 
-//But keep this file here, since it is necessary for the asam-antora-extension pipeline!
+// DO NOT DELETE! This is a "dummy-file" needed for the antora-extension that generates the navigation file with numbered headings. It is overwritten during processing, but still needed, as the processing fails when it's removed.
 
-* xref:general-docs/foreword.adoc[]
-* xref:general-docs/introduction.adoc[]
-
-////
-* xref:general-docs/scope.adoc[]
-* xref:general-docs/normative-references.adoc[]
-* xref:general-docs/abbreviations.adoc[]
-* xref:general-docs/backward-compatibility.adoc[]
-* xref:terms-and-definitions/terms-and-definitions.adoc[]
-* xref:use-cases/use-cases.adoc[]
-* Geometry
-** xref:geometry/introduction.adoc[]
-** xref:geometry/general.adoc[]
-** xref:geometry/object-classes.adoc[]
-** xref:geometry/file-format-support.adoc[]
-** xref:geometry/asset-schema.adoc[]
-** xref:geometry/mapping-schema.adoc[]
-* Material
-** xref:material/introduction.adoc[]
-** xref:material/file-structure.adoc[]
-** xref:material/material-schema.adoc[]
-** xref:material/material-emp-schema.adoc[]