Go-Back
When set to a non-zero value, the previous document in the history is loaded.
 
Example - Define a web-browser control, then in procedure division do a go back
screen section.
...
  03 screen-1-wb-1 Web-Browser
     line 23.1
     column 2.0
     size 62.2 cells 
     lines 25.6 cells 
     id 15
     value "https://www.veryant.com"
     .
...
procedure division.
...
  modify screen-1-wb-1 go-back 1
...