Help me with "Update symbol list" function

[Nguyễn Đăng Quang]

Dear Tarkus,

On the demo image at Github I saw the function "Update symbol list" but I cannot find the code in the solution.

Please send the complete code.

https://camo.githubusercontent.com/7a8b5ddb27aba9fa4f2159bcaf4ef8592c37503c/687474703a2f2f692e696d6775722e636f6d2f504659556c4c772e706e67

my email is qua...@gmail.com

Thanks

[kamble...@gmail.com]

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