In case there are encoding problems on this website too, the foreign character I am talking about is the capital A with circumflex.  

They seem to appear in place of a certain white space character, maybe non-breaking-space or something like that.

In Options > Read > Fonts... , Encoding is the default "Western European (Windows)"

If, in Options > Read > International Settings, "Use default encoding for all messages" is NOT-CHECKED, then when viewing the problematic messages on screen, the Â do not appear.

If "Use default encoding for all messages" is CHECKED, then the Â do appear all over. 

And if I use the "encoding" button at the toolbar of the single-message-view-window, and select "UTF-8", then the Â characters disappear as desired.

Regardless of the whether "Use default encoding for all messages" is checked, the Â will appear when the problematic emails are printed, either to a PDF printer or to a real printer.

It appears that when WLM is rendering an email for printing, it does not respect the settings in Options > Read.  Where can I set the render-behavior for printing?