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‎emulators/fonts/vwsvtfont/README.md

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@@ -57,35 +57,35 @@ The filenames map to various states of the terminal: 80 or
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& Technical Character Set, and so on. This table will help you to
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decode which is which. Click on the name to see an ASCII art preview.
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| Filename<BR>vwsvt0-\_\_.txt | Term<br>size | SGR1<br>(Bold) | DECDHL<br>(Double size) | DECDWL<br>(Double wide) | DECCOLM<br>(132 column mode) | Character Set<br>(Blank: Latin-1) | Cell Size |
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|-----------------------------------------------------------------|-------------:|:--------------:|:-----------------------:|:-----------------------:|:----------------------------:|-----------------------------------|:---------:|
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| [19](txt/vwsvt0_19.txt) | 80 × 24 | | | | | | 10x20 |
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| [narrow19](txt/vwsvt0_narrow19.txt) | 132 × 24 | | | | • | | 6x20 |
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| [wide19](txt/vwsvt0_wide19.txt) | 66 × 24 | | | • | • | | 12x20 |
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| [dblwide19](txt/vwsvt0_dblwide19.txt) | 40 × 24 | | | • | | | 20x20 |
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| [bold19](txt/vwsvt0_bold19.txt) | 80 × 24 | • | | | | | 10x20 |
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| [bold_narrow19](txt/vwsvt0_bold_narrow19.txt) | 132 × 24 | • | | | • | | 6x20 |
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| [bold_wide19](txt/vwsvt0_bold_wide19.txt) | 66 × 24 | • | | • | • | | 12x20 |
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| [bold_dblwide19](txt/vwsvt0_bold_dblwide19.txt) | 40 × 24 | • | | • | | | 20x20 |
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| | | | | | | | |
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| [dectech19](txt/vwsvt0_dectech19.txt) | 80 × 24 | | | | | DEC Gfx, Tech | 10x20 |
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| [narrow_dectech19](txt/vwsvt0_narrow_dectech19.txt) | 132 × 24 | | | | • | DEC Gfx, Tech | 6x20 |
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| [wide_dectech19](txt/vwsvt0_wide_dectech19.txt) | 66 × 24 | | | • | • | DEC Gfx, Tech | 12x20 |
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| [dblwide_dectech19](txt/vwsvt0_dblwide_dectech19.txt) | 40 × 24 | | | • | | DEC Gfx, Tech | 20x20 |
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| [bold_dectech19](txt/vwsvt0_bold_dectech19.txt) | 80 × 24 | • | | | | DEC Gfx, Tech | 10x20 |
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| [bold_narrow_dectech19](txt/vwsvt0_bold_narrow_dectech19.txt) | 132 × 24 | • | | | • | DEC Gfx, Tech | 6x20 |
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| [bold_wide_dectech19](txt/vwsvt0_bold_wide_dectech19.txt) | 66 × 24 | • | | • | • | DEC Gfx, Tech | 12x20 |
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| [bold_dblwide_dectech19](txt/vwsvt0_bold_dblwide_dectech19.txt) | 40 × 24 | • | | • | | DEC Gfx, Tech | 20x20 |
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| | | | | | | | |
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| [38](txt/vwsvt0_38.txt)<sup>‡</sup> | 40 × 12 | | • | | | | 20x40 |
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| [narrow38](txt/vwsvt0_narrow38.txt) | 66 × 12 | | • | | • | | 12x40 |
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| [bold38](txt/vwsvt0_bold38.txt)<sup>‡</sup> | 40 × 12 | • | • | | | | 20x40 |
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| [bold_narrow38](txt/vwsvt0_bold_narrow38.txt) | 66 × 12 | • | • | | • | | 12x40 |
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| | | | | | | | |
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| [dectech38](txt/vwsvt0_dectech38.txt) | 40 × 12 | | • | | | DEC Gfx, Tech | 20x40 |
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| [narrow_dectech38](txt/vwsvt0_narrow_dectech38.txt) | 66 × 12 | | • | | • | DEC Gfx, Tech | 12x40 |
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| [bold_dectech38](txt/vwsvt0_bold_dectech38.txt) | 40 × 12 | • | • | | | DEC Gfx, Tech | 20x40 |
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| [bold_narrow_dectech38](txt/vwsvt0_bold_narrow_dectech38.txt) | 66 × 12 | • | • | | • | DEC Gfx, Tech | 12x40 |
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| Filename<BR>vwsvt0-\_\_.txt | Terminal<br>size | SGR1<br>(Bold) | DECDHL<br>(2× size) | DECDWL<br>(2× wide) | DECCOLM<br>(132-column mode) | Character Set | Cell Size |
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|-----------------------------------------------------------------|-----------------:|:--------------:|:-------------------:|:-------------------:|:----------------------------:|---------------|:---------:|
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| [19](txt/vwsvt0_19.txt) | 80 × 24 | | | | | Latin-1 | 10x20 |
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| [narrow19](txt/vwsvt0_narrow19.txt) | 132 × 24 | | | | • | Latin-1 | 6x20 |
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| [wide19](txt/vwsvt0_wide19.txt) | 66 × 24 | | | • | • | Latin-1 | 12x20 |
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| [dblwide19](txt/vwsvt0_dblwide19.txt) | 40 × 24 | | | • | | Latin-1 | 20x20 |
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| [bold19](txt/vwsvt0_bold19.txt) | 80 × 24 | • | | | | Latin-1 | 10x20 |
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| [bold_narrow19](txt/vwsvt0_bold_narrow19.txt) | 132 × 24 | • | | | • | Latin-1 | 6x20 |
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| [bold_wide19](txt/vwsvt0_bold_wide19.txt) | 66 × 24 | • | | • | • | Latin-1 | 12x20 |
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| [bold_dblwide19](txt/vwsvt0_bold_dblwide19.txt) | 40 × 24 | • | | • | | Latin-1 | 20x20 |
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| | | | | | | | |
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| [dectech19](txt/vwsvt0_dectech19.txt) | 80 × 24 | | | | | DEC Gfx, Tech | 10x20 |
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| [narrow_dectech19](txt/vwsvt0_narrow_dectech19.txt) | 132 × 24 | | | | • | DEC Gfx, Tech | 6x20 |
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| [wide_dectech19](txt/vwsvt0_wide_dectech19.txt) | 66 × 24 | | | • | • | DEC Gfx, Tech | 12x20 |
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| [dblwide_dectech19](txt/vwsvt0_dblwide_dectech19.txt) | 40 × 24 | | | • | | DEC Gfx, Tech | 20x20 |
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| [bold_dectech19](txt/vwsvt0_bold_dectech19.txt) | 80 × 24 | • | | | | DEC Gfx, Tech | 10x20 |
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| [bold_narrow_dectech19](txt/vwsvt0_bold_narrow_dectech19.txt) | 132 × 24 | • | | | • | DEC Gfx, Tech | 6x20 |
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| [bold_wide_dectech19](txt/vwsvt0_bold_wide_dectech19.txt) | 66 × 24 | • | | • | • | DEC Gfx, Tech | 12x20 |
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| [bold_dblwide_dectech19](txt/vwsvt0_bold_dblwide_dectech19.txt) | 40 × 24 | • | | • | | DEC Gfx, Tech | 20x20 |
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| | | | | | | | |
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| [38](txt/vwsvt0_38.txt)<sup>‡</sup> | 40 × 12 | | • | | | Latin-1 | 20x40 |
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| [narrow38](txt/vwsvt0_narrow38.txt) | 66 × 12 | | • | | • | Latin-1 | 12x40 |
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| [bold38](txt/vwsvt0_bold38.txt)<sup>‡</sup> | 40 × 12 | • | • | | | Latin-1 | 20x40 |
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| [bold_narrow38](txt/vwsvt0_bold_narrow38.txt) | 66 × 12 | • | • | | • | Latin-1 | 12x40 |
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| | | | | | | | |
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| [dectech38](txt/vwsvt0_dectech38.txt) | 40 × 12 | | • | | | DEC Gfx, Tech | 20x40 |
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| [narrow_dectech38](txt/vwsvt0_narrow_dectech38.txt) | 66 × 12 | | • | | • | DEC Gfx, Tech | 12x40 |
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| [bold_dectech38](txt/vwsvt0_bold_dectech38.txt) | 40 × 12 | • | • | | | DEC Gfx, Tech | 20x40 |
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| [bold_narrow_dectech38](txt/vwsvt0_bold_narrow_dectech38.txt) | 66 × 12 | • | • | | • | DEC Gfx, Tech | 12x40 |
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<ul><p> <sup>‡</sup> <i>The filenames vwsvt0-38.pcf and
@@ -112,28 +112,29 @@ bottom half, `Esc # 4`. Both lines must hold the same characters.
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**DECCOLM**: DEC Private Mode 3 sets the column mode. When set low
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with `Esc [ ? 3 l`, the terminal is set to 80-column mode. When set
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high with `Esc [ ? 3 h`, 132-column mode. Note that if DECDHL or
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DECDHL is also set, the effective number of columns is 66.
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DECDWL is also set, the effective number of columns is 66.
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### Character encoding
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The encodings used are Latin-1 and "dectech" (for math and box drawing
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glyphs). Both encoding use 8-bit characters (>128) and are thus
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incompatible with Unicode. You'll need to set your shell's encoding to
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Latin-1 to have them display correctly — e.g., `export
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The encodings used are Latin-1 and "dectech" (for mathematics and box
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drawing glyphs). Both encoding use 8-bit characters (>128) and are
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thus incompatible with Unicode. You'll need to set your shell's
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encoding to Latin-1 to have them display correctly — e.g., `export
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LANG=en_US.iso8859-1`. Not all systems include Latin-1 support by
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default. For example, on Debian GNU/Linux, you'll need to uncomment
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the line that says `en_US.ISO-8859-1` in the file /etc/locale.gen and
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then run `locale-gen`.
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Note that the "dectech" fonts include the DEC Special Graphics font in
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GL (7-bit ASCII) and the DEC Technical Character Set in GR ("high ASCII").
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Note that the "dectech" fonts include both the DEC Special Graphics
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font ("Gfx") in GL (7-bit ASCII) and the DEC Technical Character Set
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("TCS") in GR ("high ASCII").
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<img alt="An example of the double-high, double-wide DEC Technical Character Set in the VWSVT font" src="README.md.d/dectech38.png" width=80%>
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<details><summary>How one could use this encoding on a VT340</summary>
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If one wanted to set up a terminal to use the same character encoding
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as this font it could be configured like so:
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as the VWSVT typeface presumes, it could be configured like so:
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| Set assignments | Escape sequence |
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|-----------------------|-----------------|

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