2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/47259I briefly summarize some general features of soft-gluon contribution to inclusive cross-sections. The discussion includes the issue of soft-gluon singularities in infrared- and collinear-safe observables. All-order resummation and the ensuing varieties of QCD predictions are illustrated.7 pages, latex, 2 ps figures includedHigh Energy Physics - Phenomenologytext