PRL Length Management (prl-length-management)

When to trigger

• The manuscript is over the length limit (or you suspect it is)
• You need to know how much "room" a figure or equation actually costs
• You must decide what to cut, compress, or push to Supplemental Material
• A reviewer/editor flagged the Letter as too long
• Late stage: content, figures, and SM are stable and now must fit

How the PRL length limit works (the deductible model)

A Letter is short — on the order of ~3750 words / roughly four journal pages including figures and references; verify the current limit on the APS author page. The key feature is that the limit is a deductible budget: it is not just running text. Against the same total budget you must count, in current APS practice:

• The body text (the largest term).
• Figures — each figure consumes word-equivalents that scale with its printed area / aspect ratio; a large or double-column figure costs more.
• Equations — displayed equations consume word-equivalents (roughly per line/equation).
• References — the reference list counts against the budget.
• The abstract and table material also count.