Re: Fw: \usemodule[units]

["Eckhart Guthöhrlein" <eckhart.guthoehrlein@uni-bielefeld.de>]

Willi Egger wrote:
> ----- Original Message ----- 
> From: K.H. Wesseling <k.h.wesseling@planet.nl>
> To: Willi Egger <w.egger@xs4all.nl>
> Sent: Wednesday, February 06, 2002 11:01 PM
> Subject: Re: \usemodule[units]
> 
> 
> 
>>According an ISO report of many years ago published by the US 
>>National Bureau of Standards the litre is not ISO but may be used 
>>nevertheless, meaning 1 dm^3. It is lower case l and lower case ml. 
>>The problem is that l looks so much like 1 that the practical 
>>americans use L for l. In my publications I use the $\ell$ which 
>>produces a very clear letter that is not confuseable with either l or 
>>1.

This is definitely not a good solution. It is not only the ISO standard, 
but also common practice that all units are printed in upright (roman) 
type. Why make an exception for the litre? If you really fear confusion 
-- which is unlikely with suitable fonts and a reader aware of what he 
is reading -- then it's better to use the uppercase L.

>>
>>Best wishes, Karel.
>>
>>
>>On 5 Feb 2002, at 19:25, Willi Egger wrote:
>>
>>
>>>Hi,
>>>
>>>I am not familiar with the ISO-norm concerning the use of upper and
>>>lower case for units. - My question is, if there is a definition for
>>>the 'liter'. Is the abbreviation 'l' of 'L'. Further how to write
>>>Milliliter: 'ml' or 'mL'?
>>>

In any case: consistently, of course. BTW, it's always correct to use 
the full name of the unit...

Eckhart