Some emulators interpret these steps as linear increments ( 256 / 24) on all three channels, although some emulators may explicitly define these values. The final 24 colors (232-255) are grayscale starting from a shade slighly lighter than black, ranging up to shade slightly darker than white. The proceeding 216 colors (16-231) or formed by a 3bpc RGB value offset by 16, packed into a single value. The table starts with the original 16 colors (0-15). Where should be replaced with the color index from 0 to 255 of the following color table: The following escape codes tells the terminal to use the given color ID: ESC Code Sequence Terminals that support the aixterm specification provides bright versions of the ISO colors, without the need to use the bold modifier: Color Name # Set style to dimmed white foreground with red background. These have their own set of codes, mirroring the normal colors, but with an additional 1 in their codes: Most terminals, apart from the basic set of 8 colors, also support the "bright" or "bold" colors. Note: the Reset color is the reset code that resets all colors and text effects, Use Default color to reset colors only. These colors are set by the user, but have commonly defined meanings. Most terminals support 8 and 16 colors, as well as 256 (8-bit) colors. The ESC[21m sequence is a non-specified sequence for double underline mode and only work in some terminals and is reset with ESC[24m. Note: Both dim and bold modes are reset with the ESC[22m sequence. Note: Some terminals may not support some of the graphic mode sequences listed above. Set graphics modes for cell, separated by semicolon ( ). You can use \r after erasing the line, to return the cursor to the start of the current line. Note: Erasing the line won't move the cursor, meaning that the cursor will stay at the last position it was at before the line was erased. It is therefore recommended to use DEC sequences. xterm and derived) support both SCO and DEC sequences, they are likely to have different functionality. Note: Some sequences, like saving and restoring cursors, are private sequences and are not standardized. Restores the cursor to the last saved position (SCO) Restores the cursor to the last saved position (DEC) Moves cursor one line up, scrolling if needed Request cursor position (reports as ESC[#R) Moves cursor to beginning of previous line, # lines up Moves cursor to beginning of next line, # lines down This is a common representation (and input method) and historically comes from one of the VT series of terminals. ASCII code 1 would be ^A (Ctrl-A), while ASCII code 7 (BEL) would be ^G (Ctrl-G). Note: The Ctrl-Key representation is simply associating the non-printable characters from ASCII code 1 with the printable (letter) characters from ASCII code 65 ("A"). It is recommended to use the decimal, octal or hex representation as escape code. Note: Some control escape sequences, like \e for ESC, are not guaranteed to work in all languages and compilers.
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