GE Versamax instruction question

Good day all. I have a GE Versamax micro and am studying a project I uploaded. I have software and it explains the different "references" and symbols however, there is one that I can not find in the book. I attached it here. I did notice that this particular output is an input on the next rung. Probably the association of the two has something to do with this symbol but I can't find it. Thank you

It's a one-shot coil. When the logic controlling it becomes true it turns on for one program scan and then turns off.

Thank you Steve.