diff --git a/docs/src/test/dialects.md b/docs/src/test/dialects.md
new file mode 100644
index 00000000..a2212fcb
--- /dev/null
+++ b/docs/src/test/dialects.md
@@ -0,0 +1,41 @@
+# SQL Dialects
+
+In FunSQL, properties and capabilities of a particular SQL dialect
+are encapsulated in a `SQLDialect` object.
+
+    using FunSQL: SQLDialect
+
+The desired dialect can be specified by name.
+
+    postgresql_dialect = SQLDialect(:postgresql)
+    #-> SQLDialect(:postgresql)
+
+    display(postgresql_dialect)
+    #-> SQLDialect(:postgresql)
+
+If necessary, the dialect can be customized.
+
+    postgresql_odbc_dialect = SQLDialect(:postgresql,
+                                         variable_style = :positional,
+                                         variable_prefix = '?')
+    #-> SQLDialect(:postgresql, …)
+
+    display(postgresql_odbc_dialect)
+    #-> SQLDialect(:postgresql, variable_style = :POSITIONAL, variable_prefix = '?')
+
+The default dialect does not correspond to any particular database server.
+
+    default_dialect = SQLDialect()
+    #-> SQLDialect()
+
+    display(default_dialect)
+    #-> SQLDialect()
+
+A completely custom dialect can be specified.
+
+    my_dialect = SQLDialect(:my, identifier_quotes = ('<', '>'))
+    #-> SQLDialect(name = :my, …)
+
+    display(my_dialect)
+    #-> SQLDialect(name = :my, identifier_quotes = ('<', '>'))
+
diff --git a/docs/src/test/index.md b/docs/src/test/index.md
index bc1fd037..d46d87ed 100644
--- a/docs/src/test/index.md
+++ b/docs/src/test/index.md
@@ -3,6 +3,7 @@
 ```@contents
 Pages = [
     "clauses.md",
+    "dialects.md",
     "entities.md",
     "nodes.md",
 ]