Remove all pre-signal setups, or only automatic ones.
Cht: ClearPreSig [<all>]
This clears pre-signal setups and reverts signals back to the normal type. If <all> is specified and non-zero, the cheat clears all pre-signals, even manual ones. Otherwise, only automatic pre-signals will be reset.
Note that if automatic pre-signals are enabled, the signals will be converted to pre-signals again when a train enters the corresponding block, as long as they are a valid automatic pre-signal block (see Pre-signals (detailed)).