Notation comparison

An MDI manuscript is written as {base|reading} and converted into each destination’s notation on export. This page lines MDI up with the notations in the SYNTAX.md text-export table and with DenDen Markdown’s published syntax.

Ruby, tate-chu-yoko, and emphasis marks

	Ruby	Tate-chu-yoko	Emphasis marks
MDI	{東京|とうきょう}. Split ruby uses dots: {東京|とう.きょう}	^12^	[[em:それ]]
DenDen Markdown	{電子出版|でんししゅっぱん}. Compound ruby splits on bars: {電子出版|でん|し|しゅっ|ぱん}	^53^	No dedicated syntax. In vertical layout the converter draws *emphasis* as emphasis dots
小説家になろう	｜東京《とうきょう》. Base and reading are 1–10 characters, and &"<> are rejected	No notation; the inner text is kept	Per-character dot ruby: ｜そ《・》｜れ《・》
カクヨム	｜東京《とうきょう》. Base up to 20 characters, reading up to 50	No notation; the inner text is kept	《《それ》》
青空文庫	｜東京《とうきょう》	12［＃「12」は縦中横］	［＃傍点］それ［＃傍点終わり］

DenDen ruby and tate-chu-yoko follow the official syntax. Narou follows its ruby and emphasis-dot help, Kakuyomu its notation help, and Aozora the input manual plus the annotation list.

MDI splits ruby readings with dots. DenDen splits compound ruby with bars. When the number of segments does not match the base, both fall back to group ruby.

Page breaks and vertical writing

MDI writes [[pagebreak]], [[pagebreak:left]], and [[pagebreak:right]]. Vertical writing for the whole document is the front-matter key writing-mode: vertical, which renderers apply as writing-mode: vertical-rl.

A DenDen page break is a line of three or more = signs, which splits the HTML file. Its syntax does not declare vertical writing for the whole document.

Narou and Kakuyomu plain text have no page-break notation and no document-level vertical-writing declaration. MDI export drops the page break and keeps only the inner characters of tate-chu-yoko. Aozora uses ［＃改ページ］, ［＃改丁］, and ［＃改見開き］.

Warichu

MDI writes `注記. Narou and Kakuyomu have no equivalent, so export keeps the inner text. Aozora uses ［＃割り注］注記［＃割り注終わり］`. DenDen Markdown’s syntax page does not define warichu.