This app, "Macros: How Do You Do This In SAS?", is one of a series of eBooks about SAS software programming focusing on frequently asked questions and answers about SAS macros, illustrated by code samples which can be sent by email directly from the app. It is designed to encourage users to contribute questions some of which will be included in future versions of the app. There are controls to select specific questions, move to the previous or next question, decrease or increase the font to suit the user's preference, and send emails requesting answers to questions not yet included in that version of the eBook.

The questions, and answers, included are:
1. Introduction
2. About the Author: Philip R Holland
3. Using macros in SAS programs
4. Which platform is SAS running on
5. Which version of SAS is being used
6. Selecting variables beginning with 'S'
7. Is this program running from Enterprise Guide
8. Looping through macro variables
9. How can I delete all the data sets created by my macro
10. How can I restore all the options changed by my macro