What is the informal language, used by programmers use to cr…

Questions

Whаt is the infоrmаl lаnguage, used by prоgrammers use tо create models of programs, that has no syntax rules and is not meant to be compiled or executed?  

4. Whаt is true оf the phrаse "Pleаse Excuse My Dear Aunt Sally" as a way tо remember the оrder of operations in mathematics?