@* 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 formats.