TFA 30.3015 Manual Del Usuario página 71

Editing/ deleting the imported data
User may edit or delete the imported data if necessary in the program. To edit the
data:
1. Highlight the particular data row.
2. Move the cursor to point at the figure to be altered and click the left button (of
the mouse) three times consecutively. Then the figure will be highlighted and
user can key in new figure.
On the other hand, user may delete a particular row of data by first highlighting it
and then clicking the "Delete" icon in the menu bar.
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This figure is highlighted and can be altered