This info may be useful:

• https://support.mozilla.org/en-US/kb/keyboard-shortcuts
• http://kb.mozillazine.org/Keyconfig_extension

Thank you.

However, how to install Keyconfig is not obvious. A file called keyconfig.xpi downloads but there is no information about what opens it and how to install it.

Help!

In order to install a downloaded extension, please do the following:

1. Click the menu button and choose Add-ons.
2. Drag your downloaded XPI file to the Add-ons Manager tab and drop it.

or

1. Click the menu button and choose Add-ons.
2. Click the gear icon at the top-right corner to the left of the search box and select Install Add-on From File…
3. Locate the XPI file you downloaded and click Open.

You may need to restart Thunderbird when prompted. For more detailed instructions and information about installing add-ons, see Installing an Add-on in Thunderbird.

Fuller info here:

• https://support.mozilla.org/en-US/kb/thunderbird-add-ons-frequently-asked-questions?

Image below as guide.

the info at this link: http://kb.mozillazine.org/Keyconfig_extension talks about 'In Thunderbird, choose: Tools – Keyconfig.' The 'Tools' refered to is on the 'Menu Bar' toolbar. Some people have this enabled, others not, so i've included a second imgae showing where to enable it via the 'Menu icon' (which I moved to the left side as it seemed more logical to me).

Well, that was easy. Thank you. It is puzzling that such a simple procedure could not be explained on the download page.

Anyway, now there is another problem: I don't know how to use it. I can't find any instructions other than for people who already know the code.

But I don't even know what the code language is called. Surely there is a resource somewhere for people like me. Can you suggest something?

What I want to do as a start could hardly be simpler. I just want to create keyboard shortcuts for em dashes and en dashes. I know that the codes are Alt 0150 and Alt0151. But I don't know the syntax.

Thanks again.