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Do you know where your variables are?

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Thank you all for the wonderful reply. All replies are what I wanted: concise and by analogy. Sorry for late thanks as the New Year holiday. Frankly to say I didn't catch the answers all yet. But I'll read more as LanX suggested and then read your words again before any further question. Thanks and Happay new year!

In reply to Re^2: what's difference between bless and tie? by anaconda_wly
in thread what's difference between bless and tie? by Anonymous Monk

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