Skill Wiki
Optimal Line Length
Optimal reading line length for body text is 45–75 characters per line (CPL) for single-column layouts, and 40–50 CPL for multi-column layouts. Lines outside this range measurably reduce reading speed and comprehension.
$ prime install @community/fact-optimal-line-lengthProjection
Always in _index.xml · the agent never has to ask for this.
OptimalLineLength [fact] v1.0.0
Optimal reading line length for body text is 45–75 characters per line (CPL) for single-column layouts, and 40–50 CPL for multi-column layouts. Lines outside this range measurably reduce reading speed and comprehension.
Loaded when retrieval picks the atom as adjacent / supporting.
OptimalLineLength [fact] v1.0.0
Optimal reading line length for body text is 45–75 characters per line (CPL) for single-column layouts, and 40–50 CPL for multi-column layouts. Lines outside this range measurably reduce reading speed and comprehension.
Confidence
high
Evidence
@baymard/source-ux-research-reading
Loaded when retrieval picks the atom as a focal / direct hit.
OptimalLineLength [fact] v1.0.0
Optimal reading line length for body text is 45–75 characters per line (CPL) for single-column layouts, and 40–50 CPL for multi-column layouts. Lines outside this range measurably reduce reading speed and comprehension.
Confidence
high
Evidence
@baymard/source-ux-research-reading
Confidence
high
Evidence
@baymard/source-ux-research-reading
Source
prime-system/examples/frontend-design/primes/compiled/@community/fact-optimal-line-length/atom.yaml