On Mon, 26 Mar 2007, Felix Miata wrote:

> To be clear, all IE versions default not to Xpx, but to 12pt. The M$ factory
> default DPI is 96, which translates 12pt to 16px.

I think it needs to be added that this correspondence (or some other 
correspondence that has been chosen) does not change when the monitor 
resolution is changed. Thus, if a user chooses a different resolution
among the available options, 12pt will still be 16px. This means that "pt" 
will not match its definition any more; it will be different from the 
typographic point. Similarly, "mm" will be different from the physical 
millimeter and "in" different from the inch.

The point (no pun intended) is that the "physical" units aren't really 
physical in all circumstances. Setting (or defaulting) something to 12pt 
may make it physically 12 typographic points in most circumstances, but 
not all.

-- 
Jukka "Yucca" Korpela, http://www.cs.tut.fi/~jkorpela/

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