[ADVANCED\]UV_PREVIEW [Key Value [...]] /FILE FileIn [Drop] [/BROWSE At- aper] Without /FILE, UV_PREVIEW works from the current UV data set. With the /FILE option, it will pre-view the UV data set from the specified file. Edge channels are automatically dropped in this mode, as many tele- scopes (NOEMA or ALMA) do not produce useable data in these ones. The de- fault drop is 5% of bandwidth on each side, but can be changed with the op- tion Drop value (in %).