src/resize.c::
Contains the functions to resize containers.
+src/restore_layout.c::
+Everything for restored containers that is not pure state parsing (which can be
+found in load_layout.c).
+
src/sighandler.c::
Handles +SIGSEGV+, +SIGABRT+ and +SIGFPE+ by showing a dialog that i3 crashed.
You can chose to let it dump core, to restart it in-place or to restart it