CCAR-F objective 5.1 · Domain 5 · 15% of the exam

Context Window Management

Performance degrades as the window fills, and the first casualty is an early instruction that still binds a late turn. That is the fact these items are built on, and it rules out any strategy that drops the oldest content first, since the oldest content is often the commitment. Summarising keeps it in condensed form; better still, anything that must never be lost belongs outside the material being condensed, in a block present on every turn. Two details recur: named fields survive better than regenerated prose, because rewriting is where drift enters, and the effective place to trim a large tool result is before it arrives.