I am trying to vertically concatenate all the txt messages in my SAS dataset by an id and 2 more columns into one msg. So if my table is initially like this: 1 abc 1 def 2 efg 2 ghi Then my output shd be like this, where 'abc' 'def' are in the same record but different lines, i need kind of a line break. 1 abc def 2 efg ghi I read about vertical concatenation of matrices, but not aware of how to convert a sas dataset into a mtrix. Also, I want to provide some basic HTML formatting so that the text messages is readable. Thanks! ... View more