diff --git a/Documentation/ProjectFile/prj/process_variables/process_variable/boundary_conditions/boundary_condition/NonuniformDirichlet/c_NonuniformDirichlet.md b/Documentation/ProjectFile/prj/process_variables/process_variable/boundary_conditions/boundary_condition/NonuniformDirichlet/c_NonuniformDirichlet.md
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index 0000000000000000000000000000000000000000..a4df55e6ec1007021690f91c9933f42783d21ff5
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+++ b/Documentation/ProjectFile/prj/process_variables/process_variable/boundary_conditions/boundary_condition/NonuniformDirichlet/c_NonuniformDirichlet.md
@@ -0,0 +1,2 @@
+Declares a Dirichlet boundary condition that is non-uniform in space.
+The values are read from the given boundary mesh.
diff --git a/Documentation/ProjectFile/prj/process_variables/process_variable/boundary_conditions/boundary_condition/NonuniformDirichlet/t_field_name.md b/Documentation/ProjectFile/prj/process_variables/process_variable/boundary_conditions/boundary_condition/NonuniformDirichlet/t_field_name.md
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index 0000000000000000000000000000000000000000..fc5aead79e2a9cd6e2b973505bc4c317288903e4
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+++ b/Documentation/ProjectFile/prj/process_variables/process_variable/boundary_conditions/boundary_condition/NonuniformDirichlet/t_field_name.md
@@ -0,0 +1,3 @@
+This specifies a nodal field defined on the surface mesh (see the \c mesh
+parameter of the nonuniform Dirichlet BC) and the values used for the boundary
+condition.
diff --git a/Documentation/ProjectFile/prj/process_variables/process_variable/boundary_conditions/boundary_condition/NonuniformDirichlet/t_mesh.md b/Documentation/ProjectFile/prj/process_variables/process_variable/boundary_conditions/boundary_condition/NonuniformDirichlet/t_mesh.md
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index 0000000000000000000000000000000000000000..b448b3494b3b8e6e94b50a58ec0e10733171e06e
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+++ b/Documentation/ProjectFile/prj/process_variables/process_variable/boundary_conditions/boundary_condition/NonuniformDirichlet/t_mesh.md
@@ -0,0 +1,8 @@
+Path to the surface mesh vtu file.
+
+The surface mesh must contain a nodal integer-valued field (unsigned 64bit)
+named \c OriginalSubsurfaceNodeIDs. That field establishes the mapping between
+the nodes of the surface mesh to some notes in the bulk mesh.
+\warning It is not checked if the surface mesh and the bulk mesh correspond to each
+other; in particular it is not checked if surface and bulk nodes coincide and if
+surface elements coincide with the faces of bulk elements.