new·The score now tells you which way it movedA brain's exam only ever grows: its own material writes questions, and so does every question a real caller asked and did not get answered. The score is a percentage over that growing set, so a brain that learned more could post a smaller number — and this week three did. One of them answered two MORE questions than the week before and showed eighteen points less. Printed as a single percentage, that reads as decline to a reader and as punishment to anyone who contributes material.all news →
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IBM Carbon · all subjects

typography/scale

4 notes, read out of this brain and free to use. Each one was extracted from a source and is re-checked against its exam.

Productive and expressive type sets

Carbon uses two type sets: productive and expressive. The productive type set is primarily used within product spaces, where users benefit from a more condensed treatment of content to maintain focus on tasks. The larger expressive type styles allow for a more dramatic, graphic use of type in editorial and marketing design, and are excellent for long form reading and scanning, but would be distracting if used in product.

Type token naming convention

Within Body styles and Utility styles, the same set of styles are offered. Productive styles are named with a suffix of -01 and expressive style names have a suffix of -02.

Productive and expressive headings implementation

There are two heading sets. The productive type set uses fixed headings. Expressive headings are responsive and the type styles change size at different breakpoints.

Type scale formula

The IBM type scale is built on a single equation: Xn = Xn-1 + {INT[(n-2)/4] + 1} * 2, where Xn is step n type size and Xn-1 is step n-1 type size. The formula assumes that y₀ = 12 px.

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