Mathematics tools

Jay, thanks for reporting this. There's nothing wrong on Moodle's end; this is something MathType can correct. You should have gotten a pop-up error from MathType when you tried to copy the $$\therefore$$ symbol. That error isn't terribly descriptive, so it may not have made much sense, but I'll try to help. Cutting to the chase, what needs to happen is \therefore needs to be added to the translation from MathType. I'll take care of correcting that on our end, but for now...

Couple ways to correct this on your end:

1. If you don't use $$\therefore$$ very often, just type it in, at the place where MathType should have put it.
2. If you use it a lot, or if you just don't want to have to type it in every time, here's how to add it to the Moodle: TeX filter "translator" in MathType:
   1. Your translator file is named Moodle-TeX filter.tdl, and is located here:
      Windows: C:\Program Files\MathType\Translators
        (That's Program Files (x86) if you're using 64-bit Windows.)
      Mac: Applications > MathType 6 > Translators
   2. Open the file in Notepad, TextEdit.app, or other suitable text editor.
   3. Add this as a new line 37:
      char/0x2234     = "\therefore ";       // Therefore
   4. BTW, that should come immediately after the text // redefinition of base rules, which in mine is line 36.
   5. Save the file, making sure after it's saved, its extension is still .tdl, and not something else, such as .tdl.txt
   6. To use the new translator in MathType, if you're on Windows, go to MathType's Cut & Copy Preferences, switch to a different translator, click OK, then switch to the Moodle:TeX filter translator. On the Mac, close MathType and restart it.

I'll file a ticket to change this in MathType. Please let us know how it works out.

Bob Mathews
Design Science