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Mid

Returns the string part of the string starting at the given position and optionally limited to the given length.

Usage:

Mid( x, y )
Mid( x, y, z )

Parameters:

x The input string.
y The starting position to extract from the input string (starting at 1)
z The length to extract from the string, -1 is to the end [OPTIONAL, default is -1]

Returns:

A string.

Examples:

mid("abc",1,1)  // Returns the string "a"
mid("abc",2)    // Returns the string "bc"