What is the convention to indicate “the same value as above”?

I have received a table of data to put on an html page. Many values in the second column are repeated for a few rows. The author indicated this by using starting double quotes (“), probably automatically converted by Word from a simple typed double quote.

So it looks something like this:

=======================
| name | group  | age |
=======================
| John | Family | 45  |
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| Sue  |   ,,   | 23  |
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| Alex |   ,,   | 36  |
-----------------------
| Jane | Friend | 38  |
-----------------------
| Rob  |   ,,   |     |
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I have used two commas, which I think is customary in Dutch handwriting, but the web page is in English.

What is the typographic convention to indicate “the same value as above”? If relevant, I would like to use the British English convention.

Should I use a character or combination of characters, or would row spanning be appropriate? Or should I just simply repeat the values?

A WCAG 2.0-compliant convention would is preferred.

Answer

You’re looking for the ditto mark. There’s a character specifically for this, U+3003 〃 in the Unicode CJK Symbols and Punctuation block, and you could also use a double prime, U+2033 ″ from the General Punctuation block, which should always look similar.

I don’t recall ever seeing a quotation mark U+0022 ” used for this except with typewriter or sans-serif fonts, where a quotation mark closely resembles a double-prime. Wikipedia claims that a quotation mark can be used, but only one of the four dictionaries they reference uses a quotation mark (and it is in a san-serif font); the other three use the Unicode ditto mark.

Attribution
Source : Link , Question Author : R. Schreurs , Answer Author : cjs

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