I just noticed a strange behavior of Maple with Greek letters.
I have Maple 2017 and 2018 on Windows 10 .
Suppose you write a procedure that contains Greek letters.
If you run the procedure definition, the Greek letters are not displayed correctly.
They will be displayed in words: alpha, beta, gamma,...
The procedure will still work.
Now close the file. Then open this file. Maple now shows you the procedure with the Greek letters correctly displayed.
I added a file as an example.
Maybe it's an annoying little problem known for a long time ? I don't know .
I have an old version of Maple V Release V (1997) which does not have this problem.
Best regards !