Tracer Bullet or tracer bullet may refer to: * Tracer ammunition, bullets that are built with a small pyrotechnic charge in their base * Tracer Bullet, a fictional detective, alter ego of Calvin in the comic strip ''Calvin and Hobbes'' *A term used in Scrum (software development) to describe a proof-of-concept deliverable *

Pathfinder (library science) A pathfinder is a bibliography created to help begin research in a particular topic or subject area. (Pathfinders are also called subject guides, topic guides, research guides, libguides, information portals, resource lists or study guides). Pathf ...

- a term for those pathfinders produced by the Library of Congress.

See also