diff --git a/Documentation/ProjectFile/parameter/MeshElement/c_MeshElement.md b/Documentation/ProjectFile/parameter/MeshElement/c_MeshElement.md
new file mode 100644
index 0000000000000000000000000000000000000000..5a605667fdb9a75542823d703a6b191fcc90d624
--- /dev/null
+++ b/Documentation/ProjectFile/parameter/MeshElement/c_MeshElement.md
@@ -0,0 +1 @@
+Defines a parameter which is piecewise constant on each mesh element.
diff --git a/Documentation/ProjectFile/parameter/MeshElement/t_field_name.md b/Documentation/ProjectFile/parameter/MeshElement/t_field_name.md
new file mode 100644
index 0000000000000000000000000000000000000000..c307239c5eaf97c6e759f9ac5b1c74d0406867d8
--- /dev/null
+++ b/Documentation/ProjectFile/parameter/MeshElement/t_field_name.md
@@ -0,0 +1 @@
+The name of the mesh property that contains the parameter values.
diff --git a/Documentation/ProjectFile/parameter/MeshNode/c_MeshNode.md b/Documentation/ProjectFile/parameter/MeshNode/c_MeshNode.md
new file mode 100644
index 0000000000000000000000000000000000000000..bc63fd98dec0041036e4bd85a5e8c36f65425915
--- /dev/null
+++ b/Documentation/ProjectFile/parameter/MeshNode/c_MeshNode.md
@@ -0,0 +1 @@
+Defines a parameter with values in each mesh node.
diff --git a/Documentation/ProjectFile/parameter/MeshNode/t_field_name.md b/Documentation/ProjectFile/parameter/MeshNode/t_field_name.md
new file mode 100644
index 0000000000000000000000000000000000000000..c307239c5eaf97c6e759f9ac5b1c74d0406867d8
--- /dev/null
+++ b/Documentation/ProjectFile/parameter/MeshNode/t_field_name.md
@@ -0,0 +1 @@
+The name of the mesh property that contains the parameter values.
diff --git a/Documentation/ProjectFile/parameter/i_parameter.md b/Documentation/ProjectFile/parameter/i_parameter.md
new file mode 100644
index 0000000000000000000000000000000000000000..a84f28dd28a1610b419f38433dfda728b3ebe55f
--- /dev/null
+++ b/Documentation/ProjectFile/parameter/i_parameter.md
@@ -0,0 +1,3 @@
+Defines a parameter.
+
+A Parameter is a scalar- or vector-valued field in space and time.
diff --git a/Documentation/ProjectFile/parameter/t_name.md b/Documentation/ProjectFile/parameter/t_name.md
new file mode 100644
index 0000000000000000000000000000000000000000..bb76bf7f864b90b1bf10654ac1c24ccee64a9cf9
--- /dev/null
+++ b/Documentation/ProjectFile/parameter/t_name.md
@@ -0,0 +1,4 @@
+Sets the name of the parameter.
+
+The parameter can be referenced by this name at the places where it is used,
+e.g., in initial and boundary conditions, or in the local assembler.
diff --git a/Documentation/ProjectFile/parameter/t_type.md b/Documentation/ProjectFile/parameter/t_type.md
new file mode 100644
index 0000000000000000000000000000000000000000..8ef568698c327f9cc19687fdf0c959c276255f84
--- /dev/null
+++ b/Documentation/ProjectFile/parameter/t_type.md
@@ -0,0 +1 @@
+Sets the parameter type.
diff --git a/Documentation/ProjectFile/prj/parameters/i_parameters.md b/Documentation/ProjectFile/prj/parameters/i_parameters.md
new file mode 100644
index 0000000000000000000000000000000000000000..1093a22d44c872d030c65ed6896352a03dc40c89
--- /dev/null
+++ b/Documentation/ProjectFile/prj/parameters/i_parameters.md
@@ -0,0 +1 @@
+Contains parameter definitions.
diff --git a/Documentation/ProjectFile/prj/parameters/t_parameter.md b/Documentation/ProjectFile/prj/parameters/t_parameter.md
new file mode 100644
index 0000000000000000000000000000000000000000..fa5fb7ffa1f8c90717214e89fd38eb7a00980b70
--- /dev/null
+++ b/Documentation/ProjectFile/prj/parameters/t_parameter.md
@@ -0,0 +1,3 @@
+Defines a single parameter.
+
+See \ref ogs_file_param__parameter.