12.2 @* and @/: Generate and Allow Line Breaks

The @* command forces a line break in all output formats. The @/ command allows a line break (printed manual only).

Here is an example with @*:

This sentence is broken @*into two lines.

produces

This sentence is broken
into two lines.

The @/ command can be useful within long urls or other identifiers where TeX can’t find a good place to break. TeX will automatically break urls at the natural places (see URL Line Breaking), so only use @/ if you need it. @/ has no effect on the other output format.