+#define WINHELP_CTX_serial_line "serial.line"
+#define WINHELP_CTX_serial_speed "serial.speed"
+#define WINHELP_CTX_serial_databits "serial.databits"
+#define WINHELP_CTX_serial_stopbits "serial.stopbits"
+#define WINHELP_CTX_serial_parity "serial.parity"
+#define WINHELP_CTX_serial_flow "serial.flow"