thanks for donation

Thanks to Xiang Xin Luo for donation.

For those of you who bought my Emacs Tutorial, just send me a email and i'll mail you a update. ( In the subject, put “xah emacs tutorial update”.

Buy at Buy Xah Emacs Tutorial. Thank you for support!

Also thanks to Stanley Rabinowitz of for donation, for the Visual Dictionary of Special Plane Curves project.

Note that you can purchase the entire project as downloadable file for easy reading on your computer or iPad. See: Buy A Visual Dictionary of Special Plane Curves. I still don't have Mathematica files updated yet, but you'll get free update when available.

Thank you for support!

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