diff --git a/Documentation/ProjectFile/prj/processes/process/HT/aperture_size/i_aperture_size.md b/Documentation/ProjectFile/prj/processes/process/HT/aperture_size/i_aperture_size.md
new file mode 100644
index 00000000000..c2d1e586aa1
--- /dev/null
+++ b/Documentation/ProjectFile/prj/processes/process/HT/aperture_size/i_aperture_size.md
@@ -0,0 +1 @@
+\copydoc ProcessLib::HT::HTProcessData::aperture_size
diff --git a/Documentation/ProjectFile/prj/processes/process/HT/aperture_size/t_parameter.md b/Documentation/ProjectFile/prj/processes/process/HT/aperture_size/t_parameter.md
new file mode 100644
index 00000000000..71dd7c16982
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+++ b/Documentation/ProjectFile/prj/processes/process/HT/aperture_size/t_parameter.md
@@ -0,0 +1,2 @@
+It stores the aperture size for homogeneous aperture, or the aperture size
+ of each fracture element for heterogeneous aperture.