释义（英文）
名词 Noun
- (programming, uncountable) Initialism of object-oriented programming.
- (tennis) Initialism of order of play (“the schedule of contests in a tennis event”).
- (Internet) Initialism of original original poster (“the creator of quoted material”).
形容词 Adjective
- (publishing) Initialism of out of print.
- (poker) Initialism of out of position.
- Abbreviation of out of pocket.
- Abbreviation of out of process.
动词 Verb
- (programming, informal) To use object-oriented programming for a task.