Complex sentence: This was created by Florian La Roche, who joined the S.u.S.E team, and began to develop YaST, the installer and configuration tool that would become the central point of the distribution.
Split into simpler sentences: This was created by Florian La Roche, who joined the S.u.S.E team. He began to develop YaST, the installer and configuration tool that would become the central point of the distribution.