Complex sentence: Many of these characters alter the imaging of text such as the zero-width joiner and zero-width non-joiner, while others do not affect text imaging at all, but instead affect the way text strings are collated, matched or otherwise processed.
Split into simpler sentences: Many of these characters alter the imaging of text such as the zero-width joiner and zero-width non-joiner. While others do not affect text imaging at all, but instead affect the way text strings are collated, matched or otherwise processed.