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Specify a line mode of `'any` with `read-line` to avoid differences between Windows and other platforms.

Internal definitions are recommended instead of `let` expressions, to reduce nesting.

`cond` with internal definitions is preferred over `if` with `let`, to reduce nesting

This negated `when` expression can be replaced by an `unless` expression.

This `define-syntax` macro can be replaced with a simpler, equivalent `define-syntax-rule` macro.

This `match` expression can be simplified using `match-define`.

Using `when` and `unless` is simpler than a conditional with an always-throwing branch.

The `predicate/c` contract is less clear than a `->` contract and no longer improves performance.

This `let` expression can be pulled up into a `define` expression.

Using `cond` instead of `if` here makes `begin` unnecessary

Internal definitions are recommended instead of `let` expressions, to reduce nesting.

The `define` form supports a shorthand for defining functions.

This `if`-`else` chain can be converted to a `cond` expression.

This `case-lambda` form only has one case. Use a regular lambda instead.

Internal definitions are recommended instead of `let` expressions, to reduce nesting.

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