1 Click Storage. 2  Select Backup from the items listed. 3  Select one of the device backups, then click Delete. 4  When you're asked to confirm, choose Delete if you want to turn off Backup and remove all backups for that device from iCloud. 5  When you delete a backup, it also turns off backup of your device.OS. You can use these steps to manage your files from your iPhone, iPad, or iPod touch: 1  If you're using an earlier version of iOS, tap Storage & Backup, then tap Manage Storage. 2  Tap the name of the app that's using iCloud Drive.
A section is a cut through the 3d-model. An elevation is different. It shows the face of something, or perhaps more correct, the projection of an object/s to a plane.
MSL, or mean sea level, is the altitude above sea level. Since AGL, or above ground level, changes as you go over differing terrain, we use MSL to set our altimeter so we are on a common measurement. For instance, where I live, in the Willamette Valley of Oregon, our elevation is only about 200' above sea level.