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How to use the FIND operation for Computed Attributes
The FIND operation finds the first position of a string found in a text and is case sensitive.
If the formula doesn't find any instances, the result is NULL.
FIND(search_for, text_to_search, [starting_at])
search_for - The string to look for within text_to_search
text_to_search - The text to search for the first occurrence of search_for
starting_at - [ OPTIONAL - 1 by default ] - The character within text_to_search at which to start the search