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+.LP
+.ds LH MIT-BIH A\s-2RRHYTHMIA\s+2 D\s-2ATABASE\s+2
+.ds RH E\s-2XAMPLES\s+2
+.bp 98
+.DS
+
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+
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+.DE
+.ce 1
+\fB\s12EXAMPLES\s10\fP
+
+
+.PP
+The following pages contain a set of illustrative examples from each
+database record, shown at higher resolution than in the preceding
+``full-disclosure'' plots.  Most of these examples are those shown in the
+first edition of this book.
+.PP
+The strips are each 12 seconds long;  they cover the interval specified in the
+margins to the left and right of each strip.  The scale is 12.5 mm/sec and
+5 mm/mV (i.e., half of the standard scale for ECG chart recordings).
+Grid lines appear at the standard intervals of 0.2 seconds and 0.5 mV.
+Note that the vertical position of each trace has been adjusted to
+center it in the available space;  thus it is not meaningful to compare
+absolute voltage levels between strips.  Unlike the strips in the first
+edition, however, no adjustments in gain have been made to compensate for
+amplitude differences between signals;  thus waveform amplitudes can be
+measured directly from these strips.