Easier way to delete (or cut):
(from cursor next 20 lines) <ESC> d20d
When deleted is on your copy buffer, just prest p tu paste it from cursor.
(from cursor next 20 lines) <ESC> d20d
When deleted is on your copy buffer, just prest p tu paste it from cursor.
Delete from the current line to a line with a particular line number you already see on the left if you have line numbering enabled.