You can delete a single item of data from the data entry screen when it is active (highlighted) by moving the cursor (selector bar) to that item, as represented by a keyword, and then right-clicking and choosing Delete this keyword, or by pressing [Ctrl+Backspace]. Similarly, you can delete larger batches of data from the data entry screen when it is active (highlighted) by marking the data that you wish to delete, right-clicking and choosing Delete marked keywords. Mark (or unmark) single items of data by moving the cursor (selector bar) to that item, holding down the [Ctrl] key and clicking the left mouse button. Mark blocks (in groups) by pressing [F5] on the first item of the group, scrolling down to the last item, and pressing [F5] again. Remove marks either by clicking the right mouse button and choosing Clear marks, or by pressing [Alt+F5].
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