# What does  symbol in ClearAll[“Global*”] mean?

I have found an example for clearing all symbol definition by:

ClearAll["Global*"]


But what does the symbol  mean? It isn't the apostrophe ', yet it is not documented in Mathematica help.

Jim

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It's a backtick. See this. –  Ｊ. Ｍ. Jun 10 '13 at 17:27
It's related to the concept of Context in Mathematica, see this. –  mm.Jang Jun 10 '13 at 17:28
@0x4A4D you are so fast! –  mm.Jang Jun 10 '13 at 17:30
You can learn a bit about the symbol  in a different context than Context, see this: Meaning of backtick in floating-point literal –  Artes Jun 10 '13 at 17:36
Thanks, this is solved. How can I mark one of the comments as an answer? –  JimmyLin Jun 10 '13 at 18:54