ANSI / ECMA-48 support
ECMA-48 forms the basis of ISO 6429, the current acceptable standard for text control sequences, and expands on ANSI X3.644, which first popularised escape sequences in the late 1970s with the DEC VT100 computer.
The following chart lists the limited ECMA-48 number of sequences that RetroTxt supports.
| Control | Acronym | Value | Support | Notes |
|---|---|---|---|---|
| Cursor Forward Tabulation | CHT | Yes | Acts as 4 forward movements | |
| Cursor Down | CUD | Yes | ||
| Cursor Forward | CUF | Yes | ||
| Cursor Position | CUP | Partial | Supports forward and down only | |
| Erase in Display | ED | |||
| to end of page | ED | 0 |
Partial | Only goes to the end of the line |
| to beginning of page | ED | 1 |
Yes | |
| erase all | ED | 2 |
Yes | |
| Erase in Line | EL | |||
| to end of line | EL | 0 |
Yes | |
| erase line to cursor | EL | 1 |
No | |
| erase whole line | EL | 2 |
Yes | |
| Horizontal Vertical Position | HVP | Partial | Supports forward and down only | |
| Select Graphic Rendition | ||||
| bold | SGR | 1 |
Yes | |
| faint | SGR | 2 |
Yes | |
| italic | SGR | 3 |
Yes | |
| underline | SGR | 4 |
Yes | |
| blink slow | SGR | 5 |
Yes | |
| blink fast | SGR | 6 |
Yes | |
| inverse | SGR | 7 |
Yes | |
| conceal | SGR | 8 |
Yes | |
| crossed out | SGR | 9 |
Yes | |
| font normal | SGR | 10 |
Yes | |
| alternative font 1 | SGR | 11 |
Yes | IBM BIOS |
| alternative font 2 | SGR | 12 |
Yes | IBM CGA |
| alternative font 3 | SGR | 13 |
Yes | IBM CGA thin |
| alternative font 4 | SGR | 14 |
Yes | Commodore Amiga Topaz |
| alternative font 5 | SGR | 15 |
Yes | IBM EGA 8x14 |
| alternative font 6 | SGR | 16 |
Yes | IBM EGA 9x14 |
| alternative font 7 | SGR | 17 |
Yes | IBM VGA 8x14 |
| alternative font 8 | SGR | 18 |
Yes | IBM VGA 9x14 |
| alternative font 9 | SGR | 19 |
Yes | IBM MDA |
| Fraktur font | SGR | 20 |
Yes | Germanic Gothic font Eagle Spirit PC Alt 3 fantasy inspired font |
| double underline | SGR | 21 |
Yes | |
| not bold nor faint | SGR | 22 |
Yes | |
| not italic nor Fraktur | SGR | 23 |
Yes | |
| not underline | SGR | 24 |
Yes | |
| steady | SGR | 25 |
Yes | No blinking |
| positive image | SGR | 27 |
Yes | Not inverse |
| revealed characters | SGR | 28 |
Yes | Not concealed |
| not crossed out | SGR | 29 |
Yes | |
| foreground colors | SGR | 30…37 |
Yes | |
| foreground 256 colors1 | SGR | 38;5;0…255 |
Yes | |
| foreground RGB colors2 | SGR | 38;2;R;G;B; |
Yes | |
| revert to default foreground | SGR | 39 |
Yes | |
| background colors | SGR | 40…47 |
Yes | |
| background 256 colors1 | SGR | 48;5;0…255 |
Yes | |
| background RGB colors2 | SGR | 48;2;R;G;B; |
Yes | |
| revert to default background | SGR | 49 |
Yes | |
| framed | SGR | 51 |
Yes | |
| encircled | SGR | 52 |
Yes | |
| overlined | SGR | 53 |
Yes | |
| not framed nor encircled | SGR | 54 |
Yes | |
| not overlined | SGR | 55 |
Yes | |
| bold foreground colors3 | SGR | 90…97 |
Yes | |
| bright background colors3 | SGR | 100…107 |
Yes | Requires iCE colors to be enabled |
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Allows for ISO-8613-3 24-bit color support, but it is not an ECMA-48 standard. ↩↩
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Non-standard aixterm, IBM AIX terminal support. ↩↩