tmp: Docs for basic types

include/evmc/evmc.hpp

@@ -15,13 +15,26 @@
 /// @ingroup cpp
 namespace evmc
 {
+
+/// The big-endian 160-bit hash suitable for keeping an Ethereum address.
+///
+/// This type wraps C ::evmc_address to make sure objects of this type are always initialized.
 struct address : evmc_address
 {
+    /// Default and converting constructor.
+    ///
+    /// Initializes bytes to zeros if not other @p init value provided.
     constexpr address(evmc_address init = {}) noexcept : evmc_address{init} {}
 };
 
+/// The fixed size array of 32 bytes for storing 256-bit EVM values.
+///
+/// This type wraps C ::evmc_bytes32 to make sure objects of this type are always initialized.
 struct bytes32 : evmc_bytes32
 {
+    /// Default and converting constructor.
+    ///
+    /// Initializes bytes to zeros if not other @p init value provided.
     constexpr bytes32(evmc_bytes32 init = {}) noexcept : evmc_bytes32{init} {}
 };