**Context-Identifying prefix character.** A sigil is a context-identifying character out in front of a symbol, in programmer's terms. # Examples - In RUBY, globally-scoped variables start with ` - In [[YAML]], a double exclamation mark denotes data that's explicitly typed - In [[Python]], [[F-Strings]] are denoted with `f` **** # More ## Source - [Sigil (computer programming) - Wikipedia](https://en.wikipedia.org/wiki/Sigil_(computer_programming)?wprov=sfti1) ## Related - [[YAML]]