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A Rough Idea Design system
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Voice and spelling

How A Rough Idea's pages sound: plain, specific, and about people and what they make. This is the writing half of the style guide; Foundations is the visual half.

Voice

  • Say what a thing does, in the reader's words. "Choose a model", not "Model selection".
  • Be specific. Name the model, the number, the page. "Llama 3.1 8B answered in 0.4 seconds" over "the model was fast".
  • Write about the relationship. The work is about our lives, how we live them, and the containers we build; a prototype explores that relationship. Never "how machines behave". Decided
  • Short sentences, one idea each. No hype: not "seamless", "revolutionary", "unlock" or "leverage".
  • Credit what a thing builds on, by name.

Spelling: US English

Decided TJ, October 24, 2026: "why are we using british english? colour??"
WriteNot
color, coloredcolour, coloured
gray, grayscalegrey, greyscale
center, centeredcentre, centred
behaviorbehaviour
modeled, labeled, canceledmodelled, labelled, cancelled
catalog, dialogcatalogue, dialogue (for a box on screen)
analyze, organize, recognizeanalyse, organise, recognise
license (noun and verb)licence

Keep a proper name as its owner spells it, such as an app's "Model Catalogue" tab, until the app renames it.

Dates, numbers and units

  • Dates: October 24, 2026; within the year, October 24. Decided
  • Numbers: in running text, spell out one to nine; use numerals from 10, and always for measurements, money, percentages and data.
  • Units: a space between a number and its unit (16 px, 5 m, 12 s); none before a percent sign (47.02%).
  • Probabilities: as percentages with two decimals, as the explorables show them.
  • Ranges: an en dash with no spaces (2018–2026); "to" in running text.

Recommended except where marked.