MultiLineKey ( input ; size ; output )
Takes an 'input' string of text and converts it into multi-line key values
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Function definition: (Copy & paste into FileMaker's Edit Custom Function window)
Takes an 'input' string of text and converts it into multi-line key values, suitable for matching to in a relationship.
The function will derive component strings up to the length specified by the 'size' parameter. If 'size' is zero, the result is "". If the whole string hasn't been processed when the 'size' (length) has been reached, the result will include the derived strings up to that length plus the original string value.
input = remaining text to be processed; initially the full string value
size = maximum number of characters from the initial string to be processed
output = text that has been processed; initially blank
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