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 Converts lowercase letters to uppercase letters. 
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 Syntax: 
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 Upper(string) 
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 Parameters: 
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 string: An Alpha to convert. 
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 Returns: 
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 Alpha string converted to upper case 
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 Example: 
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 Upper('john') returns 'JOHN' 
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 Note: 
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 This function works according to the mgconst language. 
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 See also: 
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 Lower 
The Online and Rich Client Samples projects (program ST04 and RST04) 
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