Unstops a process.
mp
process-unstop process => result
|   process⇩  |    
A  mp:process object. | 
|   result⇩  |    
A boolean.  | 
The function process-unstop unstops the process process if it is stopped.
If process was stopped (by process-stop), it is unstopped and resumes execution.
result is t if process was stopped, and nil otherwise.
There is a discussion of a typical use of process-unstop in the section 19.11.3 Stopping and unstopping processes.
LispWorks® User Guide and Reference Manual - 01 Dec 2021 19:30:51