pub(crate) const HEADER: &str = " 🬋🬋🬋🬋🬋🬋🬋🬋🬋🬋🬋🬋🬋🬋🬋🬋 Arithmetic REPL based on LogRu REPL v0.1.0 # 🬋🬋🬋🬋🬋🬋🬋🬋🬋🬋🬋🬋🬋🬋🬋🬋 Type `:help` to print help. Define predicates with `:define`. To exit, type `:exit`, or press Ctrl+D. ";