(page-parallel) exec "child-linear"
(page-parallel) exec "child-linear"
(page-parallel) exec "child-linear"
(page-parallel) exec "child-linear"
(page-parallel) exec "child-linear"
(page-parallel) exec "child-linear"
(page-parallel) wait for child 0
(page-parallel) wait for child 1
(page-parallel) wait for child 2
(page-parallel) wait for child 0
(page-parallel) wait for child 1
(page-parallel) wait for child 2