| Subject | English | Korean |
| comp., MS | proof of concept | 개념 증명 (The verification that the selected technology performs according to pre-established criteria in a lab environment designed to simulate the production environment) |
| comp., MS | proof of purchase | 구입 증명 (The original receipt or other document which confirms acquisition of a particular product) |
| comp., MS | proofing tools | 교정 도구 (A collection of tools such as a spelling checker, grammar checker, and thesaurus) |