(command.CommandList
  children: [
    (C {<echo>} {(DQ <'*** CLEAN BEGIN ***'>)})
    (C {<echo>} {(DQ <'Cleaning up the main work area. This may take a while...'>)})
    (C {<rm>} {<-rf>} {<work>})
    (C {<mkdir>} {<work>})
    (C {<mkdir>} {<-p>} {<source>})
    (C {<echo>} {(DQ <'*** CLEAN END ***'>)})
  ]
)