diff --git a/README.md b/README.md
index 66367f8..72e9087 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ Some of the extras are available only with C++20 or later.
  
 *stdx* supports:
  
-- clang 14 through 17
+- clang 14 through 18
 - gcc 12 through 13
 
 See the [full documentation](https://intel.github.io/cpp-std-extensions/).
diff --git a/docs/ct_format.adoc b/docs/ct_format.adoc
index 803857f..381bc87 100644
--- a/docs/ct_format.adoc
+++ b/docs/ct_format.adoc
@@ -58,3 +58,15 @@ template argument to `ct_format`.
 auto s = stdx::ct_format<"{}", sc::string_constant>(CX_VALUE(42));
 // s is sc::string_constant<char, '4', '2'>{}
 ----
+
+When formatting a compile-time `stdx::format_result`, the strings and argument
+tuples are collapsed to a single `stdx::format_result`:
+
+[source,cpp]
+----
+constexpr static auto a = stdx::ct_format<"The answer is {}">(42);
+// a is stdx::format_result{"The answer is {}", stdx::tuple{42}}
+
+constexpr static auto q = stdx::ct_format<"{}. But what is the question?">(CX_VALUE(a));
+// q is stdx::format_result{"The answer is {}. But what is the question?", stdx::tuple{42}}
+----
diff --git a/docs/intro.adoc b/docs/intro.adoc
index 3d9e072..63a65e7 100644
--- a/docs/intro.adoc
+++ b/docs/intro.adoc
@@ -19,7 +19,7 @@ The following compilers are supported:
 * clang 14
 * clang 15
 * clang 16
-* clang 17
+* clang 18
 * gcc 12
 * gcc 13
 
@@ -40,6 +40,7 @@ The following headers are available:
 * https://github.com/intel/cpp-std-extensions/blob/main/include/stdx/compiler.hpp[`compiler.hpp`]
 * https://github.com/intel/cpp-std-extensions/blob/main/include/stdx/concepts.hpp[`concepts.hpp`]
 * https://github.com/intel/cpp-std-extensions/blob/main/include/stdx/ct_conversions.hpp[`ct_conversions.hpp`]
+* https://github.com/intel/cpp-std-extensions/blob/main/include/stdx/ct_format.hpp[`ct_format.hpp`]
 * https://github.com/intel/cpp-std-extensions/blob/main/include/stdx/ct_string.hpp[`ct_string.hpp`]
 * https://github.com/intel/cpp-std-extensions/blob/main/include/stdx/cx_map.hpp[`cx_map.hpp`]
 * https://github.com/intel/cpp-std-extensions/blob/main/include/stdx/cx_multimap.hpp[`cx_multimap.hpp`]
diff --git a/docs/tuple.adoc b/docs/tuple.adoc
index 001bcf9..884e2a0 100644
--- a/docs/tuple.adoc
+++ b/docs/tuple.adoc
@@ -4,7 +4,7 @@
 https://github.com/intel/cpp-std-extensions/blob/main/include/stdx/tuple.hpp[`tuple.hpp`]
 provides a tuple implementation that mirrors
 https://en.cppreference.com/w/cpp/utility/tuple[`std::tuple`]. Mostly,
-`stdx::tuple` works the same way as `std::tuple`, with some extra functonality
+`stdx::tuple` works the same way as `std::tuple`, with some extra functionality
 and faster compilation times. All functions on tuples are `constexpr`-capable.
 
 NOTE: `tuple` is available only in C++20 and later.