//@ programs memory safe, and that prevents us from invalidating iterators, also helps secure our multi-threaded code against
//@ data races. For example, notice how `read_files` sends a `String` to `filter_lines`. At run-time, only the pointer to
//@ the character data will actually be moved around (just like when a `String` is passed to a function with full ownership). However,
-//@ `read_files` has to *give up* ownership of the string to perform `send`, to it is impossible for an outstanding borrow to
-//@ still be around. After it sent the string to the other side, `read_files` has no pointer into the string content
+//@ `read_files` has to *give up* ownership of the string to perform `send`, to it is impossible for the string to still be borrowed.
+//@ After it sent the string to the other side, `read_files` has no pointer into the string content
//@ anymore, and hence no way to race on the data with someone else.
//@
//@ There is a little more to this. Remember the `'static` bound we had to add to `register` in the previous parts, to make
//@ So if the environment of your closure contains an `Rc`, it won't be `Send`, preventing it from causing trouble. If however every
//@ captured variable *is* `Send`, then so is the entire environment, and you are good.
-//@ [index](main.html) | [previous](part12.html) | [next](part14.html)
+//@ [index](main.html) | [previous](part12.html) | [raw source](workspace/src/part13.rs) | [next](part14.html)