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Pen Lift and Hiatus

Definition

Pen lift is a deliberate stop and re-start within or between letters; hiatus is a gap left in a stroke that should be continuous, often a fatigue or forgery sign.

Pen lift
Deliberate stop and re-start of the pen within or between letters
Hiatus
Unintended gap in a stroke that should run continuously
Common cause
Writer fatigue or slow, tracing-style forgery
Field
Questioned document examination, handwriting analysis

Common questions

How does an examiner tell a pen lift from a hiatus under magnification?+

A pen lift usually shows two clean stroke ends, sometimes with a slight overlap or blob where the pen touched down again. A hiatus shows a thin, ragged gap where ink simply failed to deposit, consistent with the pen never actually leaving the surface.

Why does a hiatus point toward forgery rather than natural writing?+

Genuine writing is normally fluent, so unexplained gaps in strokes that a natural writer would produce in one continuous motion suggest hesitation, tracing, or copying from a model signature rather than free execution.

Can natural writers also produce hiatuses?+

Yes. Fast writing, a dry pen, or an awkward writing surface can all cause a genuine hiatus, which is why examiners weigh it alongside other line-quality features rather than treating it as proof of forgery on its own.

Related terms

ASTM E2290
ASTM International standard guide for examination of handwritten items; lists the 21 discriminating elements that the examiner reports on.
Baseline
The imaginary line on which letters rest; can be straight, ascending, descending, convex, concave or undulating.
Class Characteristic
A feature shared by an entire group of objects (every shoe of one model has the same sole tread; every tire of...
Exemplar (Standard)
Authentic specimen writing of the suspect used for comparison. Two classes: request (taken under examiner control) and collected (pre-existing genuine writings).
Handwriting
A neuromuscular act in which graphic forms are produced on a surface; the product of motor memory built up through years of...
Individual Characteristic
A characteristic unique to a specific typewriter unit arising from manufacturing variation or service wear; used to identify or eliminate a specific...
Line Quality
The overall fluency, rhythm and pressure variation of a stroke. Genuine writing has smooth, rhythmic, pressure-modulated lines; forgeries show tremor, blunt starts...
Ratio
Proportional relationship between the heights of small letters, capitals and ascenders/descenders.
Retrace
Re-tracing of a stroke back over its original path, common in letters like d, t and lower-loop closures.
Slant
Angle of letters relative to the baseline (right-slant, vertical, left-slant). A habit-driven class plus individual feature.

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