diff --git a/docs/rml/index.md b/docs/rml/index.md
index f23951f..01f9e20 100644
--- a/docs/rml/index.md
+++ b/docs/rml/index.md
@@ -14,13 +14,17 @@ Note, that the generated SPARQL queries can be also be executed against the SPAR
 
 ### Conversion of RML files to SPARQL
 
-```bash
-# Convert an RML file to a sequence of SPARQL queries:
-rpt rmltk rml to sparql mapping.rml.ttl > mapping.raw.rml.rq
+* Convert an RML file to a sequence of SPARQL queries using rmltk's `rml to sparql` command:
 
-# Group and/or reorder SPARQL queries:
-rpt rmltk optimize workload mapping.raw.rml.rq --no-order > mapping.rml.rq
-```
+    ```bash
+    rpt rmltk rml to sparql mapping.rml.ttl > mapping.raw.rml.rq
+    ```
+
+* Group and/or reorder SPARQL queries using rmltk's `optimize workload` command:
+
+    ```bash
+    rpt rmltk optimize workload mapping.raw.rml.rq --no-order > mapping.rml.rq
+    ```
 
 ### Executing the mapping process
 
diff --git a/docs/sparql-extensions/index.md b/docs/sparql-extensions/index.md
index f6b1ceb..cbc5230 100644
--- a/docs/sparql-extensions/index.md
+++ b/docs/sparql-extensions/index.md
@@ -1,6 +1,7 @@
 ---
 title: SPARQL Extensions
-nav_order: 20
+nav_order: 40
+has_children: true
 layout: default
 ---