is called without a "mode" specified. This uses the new default SCAN_INDEX
mode. If you need the old behavior (does not invoke the listmsgs_mod), specify
a different mode value (e.g. SCAN_READ). All of the mode values (other than
SCAN_INDEX) will not start the list message module, but rather use the internal
C++ logic.
This provides an intuitive way to actually invoke the list messages module
from JS without hard-coding bbs.exec("?module") into a cmd shell, for example.