None.
defbreaktype [tcsendbreak|TIOCSBRK|TCSBRK]
Choose one of the available methods of generating a break signal for
terminal devices. The preferred methods are “tcsendbreak” and “TIOCSBRK”.
The third, “TCSBRK”, blocks the complete screen session for the
duration of the break, but it may be the only way to generate long breaks.
“tcsendbreak” and “TIOCSBRK” may or may not produce long breaks with
spikes (e.g. 4 per second). This is not only system-dependent, this also
differs between serial board drivers. Calling defbreaktype with no
parameter displays the current setting.
None yet.