The full name of p.s. is Postscripts, which means postscript and postscript. Generally, it is not used in formal articles, so there is no specific format, and uppercase and lowercase can be used. It is usually written like this: p.s., p.s., ps. ，PS:。 The dots at the end of the middle are dispensable, just write according to your personal habits.

The way of supplementing information commonly used in early English letters has become the way of expressing important information.

Extended data:

PS extended meaning:

1, P.s.=postscript P.s means postscript. Attached to the end, the general writing rule is p capitalization, and the middle and end of s lowercase are generally separated by a period;

2.PS refers to Photoshop, a famous professional image processing software, which is used by almost all advertising companies and graphic design companies;

3.PS refers to Sony's play station, and subsequent versions include PS2, PSP and PS3；;

4.PS refers to politics, that is, "politics", which is a branch of science;

5.PS refers to polystyrene, a thermoplastic synthetic resin;

6.PS refers to Oracle Bone Inscriptions (Oracle Bone Inscriptions)' s excellent human resource management system PeopleSoft.

7. In The Da Vinci Code, Jacques Sauniere called his granddaughter sophie neveu, which is short for Princess Sophie, mainly because Sauniere wanted to hide Sophie's princess status. It is the organizational symbol of the priory, their badges and icons;

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