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state, but it does exist; use the "ESC _ n" command to open/close the cursor.
When the cursor is in the rightmost position, operation of this command
varies depending on the display mode.
A.
Coverage mode:
When the cursor is in the right position the bottom line, the position of the
cursor will move to the top left of the line. When the cursor is in the
rightmost position of top row, the cursor moves to the leftmost position of
the line.
B.
Vertical scrolling display mode:
When the cursor is in the rightmost position of the top row, the cursor moves
to the leftmost position of the line. When the cursor is in the right position
the bottom line, the bottom row of the top line of characters will roll, then the
bottom line of characters is cleared, the cursor left most position in the end of
the line.
C.
Horizontal scroll display mode:
Cursor fixed on the rightmost side.
8.
ESC [ A Cursor up
ACSII Code format
：
ESC [ A
Decimal system format
：
[027][091][065]
Hexadecimal format
：
[1BH][5BH][41H]
Note: move the cursor up one line. The cursor is not visible in the default
