# truevis Dynamo packages available to add to your definition

## 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