diff --git a/MultiTerm.Core/MultiFormatString.cd b/MultiTerm.Core/MultiFormatString.cd
new file mode 100644
index 0000000..614717f
--- /dev/null
+++ b/MultiTerm.Core/MultiFormatString.cd
@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ClassDiagram MajorVersion="1" MinorVersion="1">
+  <Class Name="MultiTerm.Core.Model.FormattedCharacter">
+    <Position X="4.5" Y="2.25" Width="2.5" />
+    <TypeIdentifier>
+      <HashCode>AAAAAAAAAAAAAAAAAAAAAAAAAAgAAAAAAAAAAAAACAA=</HashCode>
+      <FileName>Model\FormattedCharacter.cs</FileName>
+    </TypeIdentifier>
+    <Lollipop Position="0.2" />
+  </Class>
+  <Class Name="MultiTerm.Core.Model.MultiFormatString">
+    <Position X="0.5" Y="0.5" Width="3.75" />
+    <TypeIdentifier>
+      <HashCode>AACAAABAAAAAEwAAAAACAAAAAAFAAAAEAAAEAAAAoAA=</HashCode>
+      <FileName>Model\MultiFormatString.cs</FileName>
+    </TypeIdentifier>
+  </Class>
+  <Class Name="MultiTerm.Core.Model.SpacingCharacter">
+    <Position X="7.25" Y="2.25" Width="1.75" />
+    <TypeIdentifier>
+      <HashCode>AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACAA=</HashCode>
+      <FileName>Model\SpacingCharacter.cs</FileName>
+    </TypeIdentifier>
+    <Lollipop Position="0.2" />
+  </Class>
+  <Interface Name="MultiTerm.Core.Model.IFormattedCharacter">
+    <Position X="4.5" Y="0.5" Width="2" />
+    <TypeIdentifier>
+      <HashCode>AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACAA=</HashCode>
+      <FileName>Model\IFormattedCharacter.cs</FileName>
+    </TypeIdentifier>
+  </Interface>
+  <Enum Name="MultiTerm.Core.Types.FormatType">
+    <Position X="9.25" Y="0.5" Width="1.5" />
+    <TypeIdentifier>
+      <HashCode>AAAAEAAAAAAAAAAAAAAAAAAgAAAAAAAAAAAAAAAACAA=</HashCode>
+      <FileName>Types\FormatType.cs</FileName>
+    </TypeIdentifier>
+  </Enum>
+  <Font Name="Segoe UI" Size="9" />
+</ClassDiagram>
\ No newline at end of file