Captures Glyphs are a super high level representation of the traffic inside a PCAP. At a glance, you can determine roughly how many sessions occurred within the capture, how many of those sessions were TCP, UDP, or ICMP, and the rough duration.
We are incredibly excited about this update, as it provides a brand new (and kind of beautiful) way of visualizing packet captures. A glyph is automatically created when you upload a PCAP to PacketTotal.com. If you have a cool glyph, be sure to tweet it at us!(@PacketTotal/@TheJaminBecker)