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### 7.4 Setting Scroll Margins

Scroll margins at the top and bottom of the window are now supported. (The design was copied from `tpu-extras.el`.) By default, this feature is enabled with the top margin set to 10% of the window and the bottom margin set to 15% of the window. To change these settings, you can invoke the function `edt-set-scroll-margins` in your `.emacs` file. For example, the following line

         (edt-set-scroll-margins "20%" "25%")

sets the top margin to 20% of the window and the bottom margin to 25% of the window. To disable this feature, set each margin to 0%. You can also invoke `edt-set-scroll-margins` interactively while EDT Emulation is active to change the settings for that session.

Please note: Another way to set the scroll margins is to use the Emacs customization feature to set the following two variables directly: `edt-top-scroll-margin` and `edt-bottom-scroll-margin`.

Enter the Emacs `customize` command. First select the ‘`Editing`’ group and then select the ‘`Emulations`’ group. Finally, select the ‘`Edt`’ group and follow the directions.