Breaking a paragraph up, and aligning it
A paragraph broken into lines, then laid out four ways: left, right, centred, justified.
A contents page with dot leaders
Everybody has met the contents page where the dots run right into the page number on one line and stop two centimetres short on the next. It happens because the dots were typed in, and the day a title changes length the count is wrong. Nobody sees it while the document is being written; it shows up on the printed copy, at the customer's.
Here nobody types a dot. Each row is filled with exactly as many as the room left over holds, once the title and the page number are in place. Change a title, translate the whole document, set it in another font: the dots still meet the numbers, on every line, without anybody going back through the list.
What this example shows
- Rows of dots filled to the room left over, never typed by hand.
- Titles on the left and page numbers hard against the right.
- Entries that survive translation without the dots going wrong.
The source code, complete
Nothing is left out and nothing is simplified: this is the program exactly as it runs, for the developer who uses this library. The third is the description itself: a plain list of what the page has to say, which is what the service is sent.
Read the Rust source Read the Python source Read the JSON source
The document itself
Optimised, this document weighs 14.2 kB — at least 85 % lighter than most PDF generators would write it
The document is lighter than it was, and every page still looks exactly the same. See this document's row in the table of every example.
Examples near this one
Breaking an overlong word
A word longer than the column that holds it: the library leaves it whole, or cuts it at the column's edge.
Soft hyphens and no-break spaces
A justified column set twice: the long words breaking at their soft hyphens with a hyphen shown, or left whole, and a figure a no-break space keeps together.
Break points after a slash or a hyphen
A justified column set twice: file paths and compounds running past the edge with no break points, then wrapping where a break after a slash or a hyphen is allowed.
A report that lays itself out
A title, a rule, two paragraphs, a heading, a table of twenty-six rows and a footnote, handed over in reading order and broken across two pages by the engine.
A font behind the font
One line of statuses set twice: in a company font alone, where the characters it has no glyph for come out as empty boxes, then with a second font behind it that draws them.