In Ax2012 we had the task recorder, actually we had the task recorder for many version but in AX2012 it was integrated to Lifecycle services. With the new Dynamics AX we have a lot of new capabilities that are worth exploring and using for your process documentation, gap anlaysis and testing. Creating a task guide is a similar experience but better integrated and you have the choice to store in a Lifecycle service project directly form the interface.
Here is a quick walkthrough the process of creating a guide and saving it back up to your process library.
AX Build 7.0.1265.3015
If you are still working on AX2012 you can find some previous posts here