To delete drill, follow the steps below.

Navigate to Drill Library

  1. From the UDBapp home screen, tap Settings

  2. Locate and tap Drill Library

Delete single drill file

  1. Swipe from right to left and tap

OR

  1. Tap the options menu

  2. Tap Delete from Subject

Delete multiple drill files

  1. In the Drill Library, tap Edit in the top right corner

  2. Select the drill files you wish to delete

  3. Tap Delete Selected in the bottom right corner

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