diff --git a/src/doc/Data-Model.md b/src/doc/Data-Model.md
index d11a88f67141e366a28ed84895903df7ff062822..b471b8241301644b7484376a6e87f72c7f04d3bb 100644
--- a/src/doc/Data-Model.md
+++ b/src/doc/Data-Model.md
@@ -15,11 +15,10 @@ contain information about the Record. The following is a more detailed
 explanation (also see this
 [paper](https://www.mdpi.com/2306-5729/4/2/83)).
 
-> Record Types and Abstract Properties are used to define the ontology
-> for a particular domain in which the RDMS is used. Records are used
-> to store the actual data and therefore represent individuals or
-> particular things, e.g. a particular experiment, a particular time
-> series, etc.
+> Record Types and Abstract Properties are used to define the ontology for a particular domain in
+> which the RDMS (research data management) is used. Records are used to store the actual data and
+> therefore represent individuals or particular things, e.g. a particular experiment, a particular
+> time series, etc.
 
 ## Record Types
 
diff --git a/src/doc/conf.py b/src/doc/conf.py
index 700a009370e0925a209efe66da04f18324beea69..43f97aee968197c73771a3a8c1a617c987c15790 100644
--- a/src/doc/conf.py
+++ b/src/doc/conf.py
@@ -49,7 +49,7 @@ extensions = [
     "sphinx.ext.autosectionlabel",  # Allow reference sections using its title
     "sphinx_rtd_theme",
     "sphinxcontrib.plantuml",  # PlantUML diagrams
-    "sphinx_a4doc", # antl4
+    "sphinx_a4doc",            # antlr4
 ]
 
 # Add any paths that contain templates here, relative to this directory.
diff --git a/src/doc/tutorials/statemachine.rst b/src/doc/tutorials/statemachine.rst
index 317620423e6221ccaf29297fc1f71f0c008f78a0..dc46885a39548042314e77c76b1578e1a8ac2a74 100644
--- a/src/doc/tutorials/statemachine.rst
+++ b/src/doc/tutorials/statemachine.rst
@@ -30,5 +30,5 @@ of Records that have that parent. For example by executing:
 .. code-block:: Python
 
     rt = db.RecordType("Article").retrieve()
-    rt.state = db.State(name="UnPublished", model="Publish Life-cycle")``
+    rt.state = db.State(name="UnPublished", model="Publish Life-cycle")
     rt.update()