Thanks so much for your speedy responses, Hamid and THDW! While I was  
wailing and gnashing teeth, the key to this jail cell was sitting in  
that row of little flags at the bottom of the page. Resetting the  
Stars&Stripes icon to its Dutch red-white-blue equivalent did the  
trick, instantly. Excuse me while I blush.
Should have asked here much sooner, eh.
Thanks again
Aller

On 5/06/2012, at 4:00 PM, NISUS automatic digest system wrote:

> Date:    Mon, 4 Jun 2012 07:05:02 +0100
> From:    Hamid Haji <[log in to unmask]>
> Subject: Re: NWP spell checking woes
>
> On 4 Jun 2012, at 05:46, Aller Spanninga wrote:
>
>> This question is so basic it will probably be trampled underfoot by  
>> you veteran Nisus-stalwarts. But here goes, anyway: having dusted  
>> off a half-finished Dutch magazine contribution started some time  
>> ago I noticed NWP underlines most words in red. Hardly surprising:  
>> under Preferences - Languages, NWP is set to English (U.S.) and all  
>> my attempts to reset that default to another language have so far  
>> failed miserably, nor have I found any solace in the NWP User  
>> Manual on this matter. After selecting "Dutch" under Preferences --  
>> Languages and ditto in the Spelling Window, that latter selection  
>> flips back to "English (U.S.)" right after the first 'correction'.  
>> This is how it works: the spell checker stops on the first  
>> (correctly spelt) Dutch word and offers to change it into … that  
>> very same Dutch word. Accept the offer and the checker promptly  
>> jumps to the next correctly spelt Dutch word but also snaps back to  
>> its "English (U.S.)" default. Re-select "Dutch" and accept the new  
>> non-change, then the language instantly flips back to "English  
>> (U.S.)" and so on and so forth. This is the junction where I grit  
>> my teeth and give up, muttering unprintables.
>
> In NWP you can have as many languages as you want.
> View the image on this page:
> http://www.nisus.com/forum/viewtopic.php?f=22&t=3887
> Languages available are shown in the left column. If a language you  
> want to use is not available, press the '+' button and a list of  
> languages will appear from which you can add languages.
> Then for each language that you use, you have to set the  
> corresponding spelling dictionary if it is not already set by  
> default. Select the Dutch flag in the left column and make sure that  
> in the right column at 'Spelling:' the menu shows 'Nederlands'.
> Now any text in a NWP file to which the language 'Dutch' is applied  
> will be checked by 'Nederlands' spell checker.
>
> Hamid
>
> ------------------------------
>
> Date:    Mon, 4 Jun 2012 09:15:54 +0300
> From:    THDW <[log in to unmask]>
> Subject: Re: NWP spell checking woes
>
> On 4 Jun 2012, at 07:46, Aller Spanninga wrote:
>
>> then the language instantly flips back to "English (U.S.)
>
> Possibly you are checking a word at a time in Dutch and then your  
> checker is reverting to English as default.
>
> There is a set of flags at the bottom of your page.
>
> Select ALL your text and then opt for the language you wish to check  
> in and click on the corresponding flag.
>
> T
>
> ------------------------------
>
> End of NISUS Digest - 31 May 2012 to 4 Jun 2012 (#2012-50)
> **********************************************************