diff --git a/docs/_sources/libs/string/string.txt b/docs/_sources/libs/string/string.txt
new file mode 100644
index 00000000..79a0a903
--- /dev/null
+++ b/docs/_sources/libs/string/string.txt
@@ -0,0 +1,29 @@
+.. _sprout-string-basic_string-string:
+###############################################################################
+string
+###############################################################################
+
+Interface
+========================================
+.. sourcecode:: c++
+
+ template
+ using string = sprout::basic_string;
+
+Examples
+========================================
+.. sourcecode:: c++
+
+ #include
+ #include
+ using namespace sprout;
+
+ using type = string<8>;
+ static_assert(std::is_same::value, "element type of string is char.");
+
+Header
+========================================
+
+| ``sprout/string/alias.hpp``
+| Convenience header: ``sprout/string.hpp``
+
diff --git a/docs/_sources/libs/string/u16string.txt b/docs/_sources/libs/string/u16string.txt
new file mode 100644
index 00000000..5cf43db1
--- /dev/null
+++ b/docs/_sources/libs/string/u16string.txt
@@ -0,0 +1,29 @@
+.. _sprout-string-basic_string-u16string:
+###############################################################################
+u16string
+###############################################################################
+
+Interface
+========================================
+.. sourcecode:: c++
+
+ template
+ using u16string = sprout::basic_string;
+
+Examples
+========================================
+.. sourcecode:: c++
+
+ #include
+ #include
+ using namespace sprout;
+
+ using type = u16string<8>;
+ static_assert(std::is_same::value, "element type of u16string is char16_t.");
+
+Header
+========================================
+
+| ``sprout/string/alias.hpp``
+| Convenience header: ``sprout/string.hpp``
+
diff --git a/docs/_sources/libs/string/u32string.txt b/docs/_sources/libs/string/u32string.txt
new file mode 100644
index 00000000..8f58556f
--- /dev/null
+++ b/docs/_sources/libs/string/u32string.txt
@@ -0,0 +1,29 @@
+.. _sprout-string-basic_string-u32string:
+###############################################################################
+u32string
+###############################################################################
+
+Interface
+========================================
+.. sourcecode:: c++
+
+ template
+ using u32string = sprout::basic_string;
+
+Examples
+========================================
+.. sourcecode:: c++
+
+ #include
+ #include
+ using namespace sprout;
+
+ using type = u32string<8>;
+ static_assert(std::is_same::value, "element type of u32string is char32_t.");
+
+Header
+========================================
+
+| ``sprout/string/alias.hpp``
+| Convenience header: ``sprout/string.hpp``
+
diff --git a/docs/_sources/libs/string/wstring.txt b/docs/_sources/libs/string/wstring.txt
new file mode 100644
index 00000000..b3fa97a7
--- /dev/null
+++ b/docs/_sources/libs/string/wstring.txt
@@ -0,0 +1,29 @@
+.. _sprout-string-basic_string-wstring:
+###############################################################################
+wstring
+###############################################################################
+
+Interface
+========================================
+.. sourcecode:: c++
+
+ template
+ using wstring = sprout::basic_string;
+
+Examples
+========================================
+.. sourcecode:: c++
+
+ #include
+ #include
+ using namespace sprout;
+
+ using type = wstring<8>;
+ static_assert(std::is_same::value, "element type of wstring is charwchar_t
+
+Header
+========================================
+
+| ``sprout/string/alias.hpp``
+| Convenience header: ``sprout/string.hpp``
+
diff --git a/docs/libs/string/basic_string/data.html b/docs/libs/string/basic_string/data.html
index ec00ddbc..1f50f4a2 100644
--- a/docs/libs/string/basic_string/data.html
+++ b/docs/libs/string/basic_string/data.html
@@ -38,7 +38,7 @@
-
+
@@ -49,7 +49,7 @@
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- next |
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