Re: 'mm' scaling value on top-level

[Werner LEMBERG]

>> #(set-default-paper-size (cons (* 100 mm) (* 50 mm)))
>> ```
>>
>> doesn't work;
>>
>> What must I do to make 'mm' and similar dimension scale values
>> available at the top level?
> 
> Why would you not use it in the paper block?  mm is not a constant,
> it depends on the output scale.

OK, thanks for the pointer.  But I wonder what exactly the problem is:
The paper size strings passed to `set-default-paper-size` *do* contain
the 'mm' variable, see `paper-alist`.  Is the expansion of 'mm'
delayed?  Isn't there a possibility to do the same on the top level?


    Werner