I learned the concept of collating in computer science classes, yet SAS help uses the word "interleave". Nothing wrong with this, but for me and others that learned "collate" rather than "interleave" it would be nice to include this word in the help file, I think. My ideal edit to the help file would be:
Example 2: Interleaving SAS Data Sets
To interleave, or collate, two or more SAS data sets, use a BY statement after the SET statement:
set payable recvable;
Maybe, in the future, this will help someone else find this feature of the SET statement faster through a Google search for "SAS collate".