“ Wonderful advice. Many thanks!
informative post https://dinnerstates.com/preguntas/como-eliminar-el-fondo-de-un-mapa-de-bits-en-coreldraw-guia-detallada
additional reading https://clemsonrf.com/questions/jeonbo-georae-bos-maeseuteuroneun-rauteo-igseupeulrois-hu-sayongjaege-610-dalreoreul-hwanbulhabnida ”