Why is there a period at the beginning of my bar code data?

If you're using a USB keyboard wedge version
of the Microscan Quadrus Mini or the MS-4, you
may notice a "." at the beginning of the 2nd line of data.

This is the LF from the previous bar code's postamble.
In keyboard wedge mode, configure the postamble to just
be CR and not the default CR LF.