Selling of international and domestic travel products and services, the operation of retail distribution networks of travel agents and specialized freight operations.
int oled_fill(int fd, u8 start_x, u8 start_y,u8 end_x, u8 end_y,u8 data); int oled_show_one_letter(int fd, u8 x, u8 y, u8 width, u8 high, u8 *data); int oled_show_F16X16_letter(int fd, u8 x, u8 y, u8 ...
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