Command sequences Tabulation Hex 09h Decimal 9 ASCII HT This command moves the cursor right to the next horizontal position which can be divided by 8. The cursor does not move if it is at or behind the last such position in a line already. Cursor up Hex 0Bh Decimal 11 ASCII VT The cursor moves one line up unless it is in the topmost line of the writing area already. In this case it stays at its current posi- tion. This is also applicable if the cursor is in the topmost line of the writing area. Cursor down with scroll Hex 0Ah Decimal 10 ASCII LT The cursor moves one line down unless it is in the bottom line of the writing area already.
If the cursor is in the last line of the scroll area, this command causes a scroll-up by one line. 4 - 4