On 2011 Oct 28, Fri, at 1:39 pm, Þorvarður Davíðsson wrote:
> On 28.10.2011, at 17:04, Hamid Haji wrote:
>> On 28 Oct 2011, at 15:30, Robert B. Waltz wrote:
>> [...]
>>
>>> I would imagine the .zrtf format (which might well be rtf with  
>>> zip elements incorporated) will take significantly longer.
>>
>> [...]
>>
>> If you change the .zrtf file extension to .zip in the finder, you  
>> can decompress it like any .zip file, but the decompressed rtf  
>> file, with or without the file extension, can only be read by Nisus.
>
> And if you decompress it in Finder and make some changes in it,  
> then save it again with default .zrtf in the Preferences it won’t  
> be compressed again which is a bit odd. One has to use "Save as" in  
> order to compress it again as .zrtf

_________________________

Now that part—saving back to the same format it opened— does not seem  
odd to me.  Otherwise every file I ever saved would be changed to the  
default!  I would not expect it to know whether a file was originally  
saved in a different format...  I would expect it to preserve the  
format it was when it was opened.

Ben Andrus