Is there a "step back" function

Hello, I'm customizing an interface, but I need a function now. I can't find it there, or whether linuxcnc has this function. Whether there is a "step back" function when executing G code. I found that it has the function of "step".

Hello! Thank you very much for your answer. I may not have expressed my question clearly. The fallback function I want is to return to the G code executed on the previous line. Can this be achieved?
Thank you again for your reply

linuxcnc does not have a step back function.
It has a reverse run function or run-from-line function.

Hello, thank you for your answer. What is the reverse run function or run from line function you said, and how should I use it