Editing ATASCII (section)

==Control characters==
ATASCII has 16 control characters, defined in four separate ranges (0x1B to 0x1F, 0x7D to 0x7F, 0x8B to 0x8F, and 0xFD to 0xFF).<ref name="400/800 manual"/> This is a key difference between ASCII and ATASCII—in ASCII, there are 32 control characters, defined in the range 0 to 31 (0x00 to 0x1F).

All ATASCII control characters except [[Newline|End of Line]] (0x9B) have a graphic representation, which can be produced by [[Escape character|escaping]] that character by pressing the [[Escape key]] before inputting that control character.<ref name="400/800 manual"/> For example, typing "Escape" followed by "cursor right" will produce a right arrow. Uniquely, the End of Line control character always renders a newline, regardless of the presence of a preceding escape character.<ref name="400/800 manual"/>

{| class="wikitable"
|+ ATASCII control characters<ref name="Mapping the Atari"/>
|-
! [[Hexadecimal|Hex]] !! Decimal !! Function !! Keystroke
|-
| 1B || align=right | 27 || [[Escape key]] || {{keypress|ESC}}
|-
| 1C || align=right | 28 || Cursor Up || {{keypress|CTRL|-}}
|-
| 1D || align=right | 29 || Cursor Down || {{keypress|CTRL|{{=}}}}
|-
| 1E || align=right | 30 || Cursor Left || {{keypress|CTRL|+}}
|-
| 1F || align=right | 31 || Cursor Right || {{keypress|CTRL|*}}
|-
| 7D || align=right | 125 || Clear Screen || {{keypress|CTRL|<}} or {{keypress|SHIFT|<}}
|-
| 7E || align=right | 126 || Delete ||  {{keypress|BACKSPACE}}
|-
| 7F || align=right | 127 || [[Tab key|Tab]] ||  {{keypress|TAB}}
|-
| 9B || align=right | 155 || [[Newline|End of line]] ||  {{keypress|RETURN}}
|-
| 9C || align=right | 156 || Delete Line || {{keypress|SHIFT|BACKSPACE}}
|-
| 9D || align=right | 157 || Insert Line || {{keypress|SHIFT|>}}
|-
| 9E || align=right | 158 || Clear [[Tab stop]] || {{keypress|CTRL|TAB}}
|-
| 9F || align=right | 159 || Set [[Tab stop]]|| {{keypress|SHIFT|TAB}}
|-
| FD || align=right | 253 || [[Bell character|Buzzer]] || {{keypress|CTRL|2}}
|-
| FE || align=right | 254 || Delete Character || {{keypress|CTRL|BACKSPACE}}
|-
| FF || align=right | 255 || Insert Character || {{keypress|CTRL|>}}
|}