This is a generated file for the l3build validation system.
Don't change this file in any respect.
> \box...=
\vbox(550.0+0.0)x345.0
.\write-{}
.\glue(\topskip) 5.69446
.\hbox(4.30554+0.0)x345.0, glue set 324.7222fil
..\hbox(0.0+0.0)x15.0
..\OT1/cmr/m/n/10 x
..\penalty 10000
..\glue(\parfillskip) 0.0 plus 1.0fil
..\glue(\rightskip) 0.0
.\glue 528.0
.\glue 0.0
.\glue(\baselineskip) 3.60004
.\vbox(8.39996+0.0)x345.0, glue set 1.45552fil
..\hbox(6.94444+0.0)x345.0, glue set 310.5555fil
...\hbox(0.0+0.0)x15.0
...\OT1/cmr/m/n/10 b
...\OT1/cmr/m/n/10 l
...\OT1/cmr/m/n/10 u
...\OT1/cmr/m/n/10 b
...\penalty 10000
...\glue(\parfillskip) 0.0 plus 1.0fil
...\glue(\rightskip) 0.0
..\glue 0.0 plus 1.0fil minus 1.0fil
.\glue 0.0
! OK.
\__hook_toplevel cmd/@opcol/before ...\@outputbox 
                                                  }
l. ...\newpage
[1
]
> \box...=
\vbox(550.0+0.0)x345.0, glue set 528.0fil
.\glue(\topskip) 3.05556
.\hbox(6.94444+0.0)x345.0, glue set 310.5555fil
..\hbox(0.0+0.0)x15.0
..\OT1/cmr/m/n/10 b
..\OT1/cmr/m/n/10 l
..\OT1/cmr/m/n/10 u
..\OT1/cmr/m/n/10 b
..\penalty 10000
..\glue 0.0 plus 1.0fil
..\penalty -10000
..\glue(\rightskip) 0.0
.\penalty 300
.\glue(\baselineskip) 7.69446
.\hbox(4.30554+0.0)x345.0, glue set 331.66667fil
..\OT1/cmr/m/n/10 z
..\OT1/cmr/m/n/10 z
..\OT1/cmr/m/n/10 z
..\penalty 10000
..\glue(\parfillskip) 0.0 plus 1.0fil
..\glue(\rightskip) 0.0
.\glue 0.0 plus 1.0fil
.\glue 0.0
! OK.
\__hook_toplevel cmd/@opcol/before ...\@outputbox 
                                                  }
l. ...\newpage
[2]
Underfull \vbox (badness 10000) has occurred while \output is active
\vbox(550.0+0.0)x345.0
.\glue(\topskip) 0.0
.\vbox(28.45274+0.0)x345.0, glue set 24.1472fil
..\hbox(4.30554+0.0)x345.0, glue set 314.1666fil
...\hbox(0.0+0.0)x15.0
...\OT1/cmr/m/n/10 x
...\OT1/cmr/m/n/10 x
...\OT1/cmr/m/n/10 x
...\penalty 10000
...\glue(\parfillskip) 0.0 plus 1.0fil
...\glue(\rightskip) 0.0
..\glue 0.0 plus 1.0fil minus 1.0fil
.\glue 0.0
> \box...=
\vbox(550.0+0.0)x345.0
.\glue(\topskip) 0.0
.\vbox(28.45274+0.0)x345.0, glue set 24.1472fil
..\hbox(4.30554+0.0)x345.0, glue set 314.1666fil
...\hbox(0.0+0.0)x15.0
...\OT1/cmr/m/n/10 x
...\OT1/cmr/m/n/10 x
...\OT1/cmr/m/n/10 x
...\penalty 10000
...\glue(\parfillskip) 0.0 plus 1.0fil
...\glue(\rightskip) 0.0
..\glue 0.0 plus 1.0fil minus 1.0fil
.\glue 0.0
! OK.
\__hook_toplevel cmd/@opcol/before ...\@outputbox 
                                                  }
l. ...\break
[3]