((id "errno") (description "C/Unix errno numbers on current machine") (examples "EPERM ENOENT ESRCH")) ((id "http") (description "Hypertext Transfer Protocol response status codes") (examples "ok not-found forbidden")) ((id "irc") (description "Internet Relay Chat protocol numeric replies") (examples "RPL_AWAY RPL_LIST RPL_TOPIC")) ((id "port") (description "TCP/UDP port number to service mapping") (examples "echo daytime ftp ssh")) ((id "signal") (description "C/Unix signal numbers on current machine") (examples "SIGHUP SIGINT SIGQUIT")) ((id "sqlite") (description "SQLite C library result codes") (examples "SQLITE_OK SQLITE_ERROR")) ((id "windows") (description "Windows API GetLastError() codes") (examples "ERROR_SUCCESS ERROR_FILE_NOT_FOUND")) ((id "winsock") (description "Windows Sockets API codes") (examples "WSA_INVALID_HANDLE WSAEWOULDBLOCK"))