Step Value 0. All entries to the right will be identical to the current entry. Thus, if you enter 4 on the main screen, and then enter Linear with a step value of 0 on the pop-up, Offtoa will enter the value 4 in all fields on the main screen to the right of the 4 you entered.
Step Value 1. All entries to the right will be 1 higher than the entries to their left. Thus, if you enter 4 on the main screen, and then enter Linear with a step value of 1 on the pop-up, Offtoa will enter the values 5, 6, 7, 8, and so on, in the subsequent fields.
Step Value 10. All entries to the right will be 10 higher than the entries to their left. Thus, if you enter 4 on the main screen, and then enter Linear with a step value of 10 on the pop-up, Offtoa will enter the values 14, 24, 34, 44, and so on, in the subsequent fields.