&echo &on
&s count := [filelist * outfile -cover -line]
&if %count% <= 0 &then
    &return Error generating output file.
&s unit := [open outfile ok -read]
&do I := 1 &to %count%
    &s cover := [read %unit% ok]
    BUILD %cover% LINE
&end
/* close and delete output file.
&s ok := [close %unit%]
&s ok := [delete outfile -file]
&echo &off
&return