Mid
<evalcmd> Mid && string && Specified portion of the string. && string && string && Input string to return a portion of. && start && int && Starting position to return (0 is the left-most position). && [length] && int && Length of string to return. </evalcmd>
Returns length characters from string starting at position start. If length is -1 or omitted, returns from start to the end of the string.
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