@ -19060,7 +19060,7 @@ Synchronizing `iostreams` with `printf-style` I/O can be costly.
### <a name="Rio-endl"></a>SL.io.50: Avoid `endl`
### Reason
##### Reason
The `endl` manipulator is mostly equivalent to `'\n'` and `"\n"`;
as most commonly used it simply slows down output by doing redundant `flush()`s.