Copies a specified line from one string and appends that line to another string.
The number of the line within multi-line string that you want to append to string.
The index of the first line is 0. If line index is negative or is greater than or equal to the number of lines in multi-line string, this node returns string.
One or more substrings separated by linefeeds.
A string to which this node appends the line selected from multi-line string.
Default: Empty string
The result of concatenating string and the line selected from multi-line string.