Co-founder Adobe dies

Adobe co-founder Charles Geschke who helped develop the PDF dies

Geschke set up Adobe in 1982, giving the world the ubiquitous PDF software, among many other audio-visual innovations.

He made headlines 10 years later when he was kidnapped at gunpoint and held for ransom before being released unhurt after a four-day ordeal.

Geschke died in California on Friday.

Adobe CEO Shantanu Narayen said Geschke, widely known as Chuck, "sparked the desktop publishing revolution".