Document fstring

doc/api.md

@@ -269,18 +269,16 @@ that support C++20 `consteval`. On older compilers you can use the
 
 Unused arguments are allowed as in Python's `str.format` and ordinary functions.
 
-::: basic_format_string
+See [Type Erasure](#type-erasure) for an example of how to enable compile-time
+checks in your own functions with `fmt::format_string` while avoiding template
+bloat.
+
+::: fstring
 
 ::: format_string
 
 ::: runtime(string_view)
 
-### Named Arguments
-
-::: arg(const Char*, const T&)
-
-Named arguments are not supported in compile-time checks at the moment.
-
 ### Type Erasure
 
 You can create your own formatting function with compile-time checks and
@@ -317,6 +315,12 @@ parameterized version.
 
 ::: basic_format_arg
 
+### Named Arguments
+
+::: arg(const Char*, const T&)
+
+Named arguments are not supported in compile-time checks at the moment.
+
 ### Compatibility
 
 ::: basic_string_view