It is feasible to "convert" Angel Writer at launch.
The spellcheck dictionaries (Addict type) may be copyed - from other dir - over 'English.adm' and the interface Language might lay near 'English.lng' as referenced in 'AngelWriter.ini'.
A 'Launch.bat' (or maybe a small App "AngelWriterPortable.exe') just have to:
1) Ask the user for the base language;
2) Copy a new 'AngelWriter.ini' (over the old? at home dir) referencing the interface language (already in place) at 'Languages' dir, say 'French.lng';
3) Copy the dictionary (e.g.: French.adm') as 'English.adm' (with that name) into 'Addict' dir, previously empty;
4) Launch 'AngelWriter.exe' as a sub-process;
5) At exit erase what it has copyed.

It is possible to configure the Addict spellchecker to some degree by editing the registry.
E.g. with these settings, a 2nd main dictionary ("german_alt.adm") is added.

[HKEY_CURRENT_USER\Software\Angelic Software\AngelWriter\Addict]
"_Main_count"="2"
"_Main_0"="English.adm"
"_Main_1"="german_alt.adm"

In theory, this could be also possible with a file called "Spell.cfg" containing the same strings as the registry. Then again, I couldn't get it to work this way.
As a 2nd note, the exe is packed with UPX and can be unpacked with e.g. FUU (Free Universal Unpacker). In the unpacked exe, you can rename "Times New Roman" to e.g. "Calibri" to change the default font.

It seems that the "additional dictionaries" on www.addictivesoftware.com will do it. At least German spellchecking seems to work.

Download the desired dictionary, unpack and put the adm-file in the Addict directory of Angel Writer. But now you have to do a trick: Rename your adm-file to English.adm (perhaps make a backup of the original adm-file). After the next start Angel-writer checks your native spelling, not perfect but ...

No spell check other than highlighting words it thinks are misspelled as you type. Auto-corrects words with mixed case with no option (that I could see) to turn that off, making it impossible to type custom names and terms. Doesn't let you enter custom font sizes.

Might be ok for knocking out the occasional note, but falls ridiculously short of being considered a real word processor.

AngelWriter would easily be my favourite fast-starting RTF editor if it were possible to switch off its pesky spell checking (that keeps underlining with those wavy red lines every word not written in English) and if it were possible to change the standard font (Times New Roman, Size 12) with which the program starts every time. As it is, I'll stick to the latest "Jarte" (ever since it got the new "Show Quick Bar" option which makes it easier to use now via a traditional buttons bar instead of just the drop-down menus).

I'm also created HKEY_CURRENT_USER\Software\Angelic Software\Angel Writer in my machine. either install-uninstall or extract procedure when i launch the angelwriter.exe

thanks...

Same as Local; working under Win98, I installed (rather than extracted) version 3.1 Build 380, copied the app folder (same as Ilyus : only Help.chm present) where I wanted to, uninstalled (no registry entry left behind) and ran writer.exe from the new location. It does leave a blank entry in the registry.
Export to HTML could be a bit better (font color tag not so useful) but it's still a fast, reasonably powerful RTF tool.

I have installed version 3.1.0.380 and the setup didn't install any "Help,1.chm" or "Help,2.chm". There was only the file "Help.chm". Using WinPooch during the application runs, I have confirmed that this doesn't access to USERSETTINGS and doesn't write anything in registry, either(it seeds at the startup, but it's not any problem). It doesn't have any problem after uninstalling(deleting registry entries), so it's perfectly portable! To Webfork: this is a word processor and not any office suite. If you say this has only 10 steps to MS Word, this is a very exaggeratedly luxurious word processor!

10 steps behind Microsoft word but 10 steps ahead of WordPad.

Looks just like a stripped down version of Word 2000, this program provides all the basics. Since almost no one uses all the power features of the lastest version of Word, this is more than adequate. Notably, it lacks any kind of spellcheck. Its ability to save to HTML, RTF, and TXT formats makes it very connected but its inability to open anything other than TXT, HTML, or RTF limits it.