Some programs have an undo immediate trial button that allows for the trial immediately inputted to be undone. But there is no feature that allows for the realization of an error to be fixed later. For example, in supervision technician had taken data on a TA then transferred to a different program and took data, then we went back to the TA and I noticed the data was collected under the wrong program. But pressing undo removed the data from the program between the two TA's and was too much to remember and complex. Having a remove button would be helpful to fix data errors that aren't immediately recognized.