Description:

• The command quit, when executed, stops the execution of a Sollya script and leaves the Sollya interpreter unless the quit command is executed in a Sollya script read into a main Sollya script by execute or #include.
  
  Upon exiting the Sollya interpreter, all state is thrown away, all memory is deallocated, all bound libraries are unbound and the temporary files produced by plot and externalplot are deleted.
  
  If the quit command does not lead to a halt of the Sollya interpreter, a warning is displayed.