diff --git a/Documentation/ProjectFile/prj/process_variables/process_variable/source_terms/source_term/Line/c_Line.md b/Documentation/ProjectFile/prj/process_variables/process_variable/source_terms/source_term/Line/c_Line.md
deleted file mode 100644
index cc2721738f63d5796b3233579f5a97760f3f8507..0000000000000000000000000000000000000000
--- a/Documentation/ProjectFile/prj/process_variables/process_variable/source_terms/source_term/Line/c_Line.md
+++ /dev/null
@@ -1 +0,0 @@
-Declares a source term that is defined on a line shaped domain.
diff --git a/Documentation/ProjectFile/prj/process_variables/process_variable/source_terms/source_term/Line/t_parameter.md b/Documentation/ProjectFile/prj/process_variables/process_variable/source_terms/source_term/Line/t_parameter.md
deleted file mode 100644
index b8886c8623f3ce72d8e2b8e4e3fff3856546d6b1..0000000000000000000000000000000000000000
--- a/Documentation/ProjectFile/prj/process_variables/process_variable/source_terms/source_term/Line/t_parameter.md
+++ /dev/null
@@ -1,4 +0,0 @@
-The name of the parameter that defines the value that should be used for the source
-term. The parameter have to defined on the line domain.
-
-The user should carefully check which physical quantity that parameter is.
diff --git a/Documentation/ProjectFile/prj/process_variables/process_variable/source_terms/source_term/Volumetric/c_Volumetric.md b/Documentation/ProjectFile/prj/process_variables/process_variable/source_terms/source_term/Volumetric/c_Volumetric.md
index 731c3267827f90ec1dc97888000bf3cca46f6bac..ec9c46386ba7c3e97c45e18c293f4c9cf43cbedf 100644
--- a/Documentation/ProjectFile/prj/process_variables/process_variable/source_terms/source_term/Volumetric/c_Volumetric.md
+++ b/Documentation/ProjectFile/prj/process_variables/process_variable/source_terms/source_term/Volumetric/c_Volumetric.md
@@ -1,3 +1,4 @@
-Declares a source term that is defined on the entire domain.
+Declares a source term that is defined on a sub-domain (volumetric) with the
+same dimensionality d or on a 1d (line mesh) sub-domain.
 
 The user should carefully check which physical quantity that parameter is.
diff --git a/ProcessLib/SourceTerms/CreateVolumetricSourceTerm.cpp b/ProcessLib/SourceTerms/CreateVolumetricSourceTerm.cpp
index 0acf5a373fc676aeaf56ca372dd41ae8caaa87a8..08f0a45f6054a9509c2ef0e428055c9bec17774b 100644
--- a/ProcessLib/SourceTerms/CreateVolumetricSourceTerm.cpp
+++ b/ProcessLib/SourceTerms/CreateVolumetricSourceTerm.cpp
@@ -30,11 +30,13 @@ std::unique_ptr<SourceTerm> createVolumetricSourceTerm(
     auto const type = config.peekConfigParameter<std::string>("type");
     if (type == "Line")
     {
+        //! \ogs_file_param{prj__process_variables__process_variable__source_terms__source_term__type}
         config.checkConfigParameter("type", "Line");
         DBUG("Constructing LineSourceTerm from config.");
     }
     else
     {
+        //! \ogs_file_param{prj__process_variables__process_variable__source_terms__source_term__type}
         config.checkConfigParameter("type", "Volumetric");
         DBUG("Constructing VolumetricSourceTerm from config.");
     }