Here is a list of all files with brief descriptions:

[detail level 1234]

docs
include
rclcpp
detail
config.hpp	Inline storage-size macros for opaque entity buffers
serialization_format.hpp	rclcpp::format_of<M> — a message type's serialization format; rclcpp::linked_format() — the linked backend's; and the static_assert that refuses to create a typed entity over a message the backend cannot encode
client.hpp	rclcpp::Client<S> — the arena-registered (callback-style) service client, and Client<S>::SharedPtr = rclcpp::ClientHandle<S>
executor.hpp	rclcpp::Executor — drives transport I/O and dispatches callbacks
fixed_sequence.hpp	rclcpp::FixedSequence<T,N> — fixed-capacity sequence container
fixed_string.hpp	rclcpp::FixedString<N> — fixed-capacity null-terminated string
future.hpp	rclcpp::Future<T> — single-shot deferred result
guard_condition.hpp	rclcpp::GuardCondition — cross-thread wake source
node.hpp	rclcpp::Node and global session helpers
publisher.hpp	rclcpp::Publisher<M> — typed topic publisher
qos.hpp	rclcpp::QoS — full DDS-shaped QoS settings (Phase 108.B.7)
rclcpp.hpp
result.hpp	rclcpp::Result, rclcpp::ErrorCode, and the RCLCPP_TRY macro
service.hpp	rclcpp::Service<S> — the arena-registered (callback-style) service server, and Service<S>::SharedPtr = rclcpp::ServiceHandle<S>
span.hpp	rclcpp::Span<T> and rclcpp::StringView — non-owning views
stream.hpp	rclcpp::Stream<T> — multi-shot message receiver
subscription.hpp	rclcpp::Subscription<M> — the typed DISPATCH subscriber: the arena owns it and the executor calls your handler
timer.hpp	rclcpp::Timer — periodic callback driven by the executor
rclcpp_action
client.hpp
server.hpp