Indicators and slots, language build utilized to simplify observer sample implementations in signal programming and especially GUI design???????????????????????????? ??????????????????????????????????????????????????????????????Groove (engineering), a characteristic Slash right into a difficult content to offer a site for one more ingredient???????

Signals and slots, language build used to simplify observer sample implementations in sign programming and particularly GUI style???????????????????????????? ??????????????????????????????????????????????????????????????Groove (engineering), a characteristic Lower right into a tricky material to supply a spot for one more ingredient????????????????