> PS I don't know if it is the case anymore, but Macs used to have a display server that handled all screen images in PDF format. That was an optimization from

> PS I don't know if it is the case anymore, but Macs used to have a display server that handled all screen images in PDF format. That was an optimization from the NeXT display server, which displayed using Display PostScript. Quartz! https://en.wikipedia.org/wiki/Quartz_(graphics_layer)#Use_of_PDF https://en.wikipedia.org/wiki/Quartz_(graphics_layer)#Use_of...