BackNotebook

The Design

Engineering Pad: green computation paper with a title block on every note and numbered sections, drawn as a blueprint in dark mode. This note shows everything a note can contain.

Updated 2026-10-28

The design is called Engineering Pad, after the green, gridded computation paper engineers used to work problems on. It's phone first, and it switches to a blueprint when the device is in dark mode.

The parts of a page

Title block

The box at the top of every note is a drawing's title block: Subject, Description, Tags, and Date. They come straight from the front matter (see Writing a Note).

A sketch of the title block, with its four labeled cells

Numbered sections

Sections are numbered 1, 1.1, 1.2, and so on, like a specification, so "see 2.1" means something. The contents box uses the same numbers, and on a wide screen it sits beside the text and marks the section you're reading.

Everything a note can contain

Lists and tasks

  • A bullet, drawn as a dash.

  • A second bullet, with a link.

  • A finished task gets a drafting X.

  • An open task is an empty box.

Tables

Element Drawn as
Section heading Capitals over a rule
Break within a section A dimension line
Table A solid box, scrolling sideways on a phone

Quotes, code, and footnotes

A quote sits behind a ruled line, in italics.

Inline code and blocks of it are set in IBM Plex Mono:

const note = parseNote(text);

Footnotes collect at the bottom of the note.1


Type

Three cuts of IBM Plex: Sans for reading, Sans Condensed for headings, and Mono for labels, dates, and tags. All of it is self-hosted, and everything scales from one root size, set 40% larger than the browser default.

Footnotes

  1. Like this one. ↩