Template:Chset-ctrl4/doc

This is a documentation subpage for Template:Chset-ctrl4
It may contain usage information, categories and other content that is not part of the original template page.

Note

This template replaces Template:chset-ctrl and is an enhancement of Template:chset-ctrl3, additionally displaying the code point in octal.

Usage

Used with Template:chset-tableformat to indicate a table cell for a control character or non-printing punctuation character.

Parameter 1: hhhh, Hexadecimal Unicode value, 4 digits (e.g., 0020)
Parameter 2: X, Control character name (e.g., SP), with link to appropriate article
Parameter 3: dd, Decimal character code, 1–3 digits (e.g., 32)
Parameter 4: ooo, Octal character code, 3 digits (e.g., 040)

For example, the first four ASCII control characters (Unicode U+0000 thru U+0003, decimal 0 through 3, octal 000 through 003) are coded as rows in a character set table like this:

{|
|{{chset-color-ctrl}}|{{chset-ctrl4|0000|[[Null character|NUL]]|0|000}}
|{{chset-color-ctrl}}|{{chset-ctrl4|0001|[[Start of heading|SOH]]|1|001}}
|{{chset-color-ctrl}}|{{chset-ctrl4|0002|[[Start of text|STX]]|2|002}}
|{{chset-color-ctrl}}|{{chset-ctrl4|0003|[[End of text|ETX]]|3|003}}
|}

Which yields:

NUL
0000
0
000

SOH
0001
1
001

STX
0002
2
002

ETX
0003
3
003

Another example illustrates the coding for a few of the ISO/IEC non-printing punctuation characters:

{|
|{{chset-color-misc}}|{{chset-ctrl4|0020|[[Space (character)|SP]]|32|040}}
|{{chset-color-misc}}|{{chset-ctrl4|00A0|[[Non-breaking space|NBSP]]|160|240}}
|{{chset-color-ctrl}}|{{chset-ctrl4|00AD|[[Soft hyphen|SHY]]|173|255}}
|}

Which yields:

SP
0020
32
040

NBSP
00A0
160
240

SHY
00AD
173
255

Chset family of templates

See ISO 8859-1, Windows-1252, and EBCDIC for examples of usage.

Header and footer rows

Template:chset-table-header — Header and title row for a 16 column character set table
Template:chset-table-footer — Footer row for a 16 column character set table

Character row header

Template:chset-left — Left row code header

Character cell colors

Template:chset-color-letter — Letter (alphabetic, syllabic or logographic) character cell color (Unicode category L)
Template:chset-color-digit — Number character cell color (Unicode category N)
Template:chset-color-graph — Symbol character cell color (Unicode category S)
Template:chset-color-punct — Punctuation character cell color (Unicode category P)
Template:chset-color-undef — Undefined/unassigned character cell color
Template:chset-color-misc — Combining, whitespace or end-user defined character cell color (Unicode category M, Z, Co)
Template:chset-color-ctrl — Control character cell color (Unicode category Cc, Cf). Currently treated the same as misc.
Template:chset-color-esc — Lead byte in a multi-byte encoding (not a complete character).

For generating colours for cells by Unicode category, this script may be helpful.

Certain colours are in the process of being phased out:

Template:chset-color-ext-punct — Extended punctuation character cell color. Intended to represent non-ASCII punctuation, this is not a category used by Unicode (and there are no corresponding ext-digit, ext-graph etc). Currently renders the same as punct.

In addition to these, boxed and slightly shaded variants of these exist in order to indicate some kind of additional information (depending on the article) like, for example, a derivation from a base codepage, a variance of definition of the corresponding codepage in different sources (to be explained in the article) or in different revisions of a code page:

Template:chset-color-letter-box — Boxed letter character cell color
Template:chset-color-digit-box — Boxed number character cell color
Template:chset-color-graph-box — Boxed symbol character cell color
Template:chset-color-punct-box — Boxed punctuation character cell color
Template:chset-color-undef-box — Boxed undefined/unassigned character cell color
Template:chset-color-misc-box — Boxed combining, whitespace or end-user defined character cell color
Template:chset-color-ctrl-box — Boxed control character cell color
Template:chset-color-esc-box — Boxed lead byte cell color
Template:chset-color-ext-punct-box exists, but see the note above.

and

Template:chset-color-letter-var — Shaded letter character cell color
Template:chset-color-digit-var — Shaded number character cell color
Template:chset-color-graph-var — Shaded symbol character cell color
Template:chset-color-punct-var — Shaded punctuation character cell color
Template:chset-color-undef-var — Shaded undefined/unassigned character cell color
Template:chset-color-misc-var — Shaded combining, whitespace or end-user defined character cell color
Template:chset-color-ctrl-var — Shaded control character cell color
Template:chset-color-esc-var — Shaded lead byte cell color
Template:chset-color-ext-punct-var exists, but see the note above

Please note that the boxed variants must not be used, if a cell, which is not to be marked, is surrounded by four cells, which need to be marked, as this would make the central cell appear marked as well. The shaded variants do not exhibit this problem.

For as long as there is no need to differentiate one or a few of the cells in a group from the other cells in the same group, refer to the normal (that is, the non-"box"- or "var"-type) templates further above.

Character cell contents

Template:chset-cell — Character cell with character + Unicode value
Template:chset-cell3 — Character cell with character + Unicode value + decimal index
Template:chset-cell4 — Character cell with character + Unicode value + decimal + octal index
Template:chset-ctrl — Control character cell with name + Unicode value
Template:chset-ctrl3 — Control character cell with name + Unicode value + decimal index
Template:chset-ctrl4 — Control character cell with name + Unicode value + decimal + octal index
Template:chset-cell-unified — Any of the above, plus optional kuten