Dynamo
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Excel Sum String
Takes a column name, start and stop integer and outputs SUM(…) to do a sum in an Excel cell
Usage example
This is taking the count of a list, using that for the count, adding 1 for the row and making a totals line for column D, E, and I before writing to Excel:
List.Append
Takes two lists and appends the second to the first
ReplaceSubList
Takes two lists and and integer (n), replaces the nth item in list1 with list 2