The ALGOL family marks reserved words specially. How to mark them is implementation specific. Some require `all `keywords `be `marked `with `a `symbol. Other

The ALGOL family marks reserved words specially. How to mark them is implementation specific. Some require `all `keywords `be `marked `with `a `symbol. Others Require Keywords Be Capitalized. Some use a different font. (Yes, italics or bold can be semantically important in programming, it turns out.) If all your keywords are specially marked, everything between them can be vacuumed up by the parser as-is. It's actually easier to parse than modern languages with space delimiters. But arguably worse to write.