\hbadness
   TEX engines provide the commands \hbadness and \vbadness that are used to
help TEX determine whether it classifies, and reports, a particular horizontal or
vertical box as underfull or overfull. Note these commands do not change or affect the appearance of typeset boxes, they merely determine what TEX reports to you.
- \hbadness[=]<number>:- \hbadnessspecifies a threshold badness value to be used when classifying a horizontal box as underfull or overfull.
- \vbadness[=]<number>:- \vbadnessspecifies a threshold badness value to be used when classifying a vertical box as underfull or overfull.
Usage examples:
- \vbadness=1000or- \vbadness 1000(the “=” sign is optional)
- \hbadness=500or- \hbadness 500(the “=” sign is optional)
   Note that TEX also uses two additional parameters when determining whether an
\hbox or \vbox is to be reported as overfull: