On Sat, Feb 9, 2019 at 6:23 AM Richard Wordingham via Unicode < unicode@unicode.org> wrote:
> On Sat, 9 Feb 2019 04:52:30 -0800 > David Starner via Unicode <unicode@unicode.org> wrote: > > > Note that this is actually the only thing that stands out to me in > > Unicode not supporting older character sets; in PETSCII (Commodore > > 64), the high-bit character characters were the reverse (in this > > sense) of the low-bit characters. > > Later ISCII has some styling codes, bold and italic amongst them. > Interesting. I found the 1991 ISCII spec: http://varamozhi.sourceforge.net/iscii91.pdf The styling codes are: EF 30 - Bold EF 31 - Italic EF 32 - Underline EF 33 - Double Width EF 34 - Highlight EF 35 - Outline EF 36 - Shadow EF 37 - Double Height, Top Half EF 38 - Double Height, Bottom Half EF 39 - Double Height & Double Width There are also codes for switching scripts (Roman, Devanagari, Bengali, Tamil, Arabic, Persian, etc.) but these are not necessary since Unicode encodes these separately. These take effect "till the end of a line, or till the same attribute [code is encountered]." In other words, these just toggle the attribute, and all the attributes are reset when a newline is encountered.
