Meaning of Preference Variable print.printer_[xxx].print_paper_size_unit?

"David E. Ross" <not_me@not_there.invalid> Tue, 26 Jan 2021 12:01:51 -0800
Newsgroups gmane.comp.mozilla.general
Organization I am @ david at rossde dot com.
Message-ID <[email protected]>
Windows 7
SeaMonkey 2.49.5

What is the meaning of the preferences variables
	print.printer_[xxx].print_paper_size_unit
where [xxx] is the name of a printer?

I have the following, all having the "user set" value of 0:
print.printer_Fax.print_paper_size_unit
print.printer_HP_LaserJet_200_color_M251_PCL_6.print_paper_size_unit
print.printer_doPDF_10.print_paper_size_unit

-- 

David E. Ross
<http://www.rossde.com/>.

The only reason we have so many laws is that not enough people will do
the right thing.  (© 1997 by David Ross)

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