diff --git a/gitbook/README.md b/gitbook/README.md
new file mode 100644
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+++ b/gitbook/README.md
@@ -0,0 +1,2 @@
+# Page
+
diff --git a/gitbook/SUMMARY.md b/gitbook/SUMMARY.md
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+++ b/gitbook/SUMMARY.md
@@ -0,0 +1,4 @@
+# Table of contents
+
+* [Page](README.md)
+* [Small dev details](small-dev-details.md)
diff --git a/gitbook/small-dev-details.md b/gitbook/small-dev-details.md
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+++ b/gitbook/small-dev-details.md
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+# Small dev details
+
+/