Among other disclosed subject matter, a computer program product is tangibly embodied in a computer-readable storage medium and includes instructions that when executed by a processor perform a method for interfacing with an application program. The method includes receiving, from an application program that has an interface, an interface description defining how to make an input into the application program using the interface. The method includes generating a screen for a user to define a step corresponding to a task to be performed in the application program by another user, the screen generated using the interface description. The method includes forwarding a step description for receipt by the application program, the step description created using a definition made under guidance of the screen, and configured consistently with the interface for the application program to create the task.