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Enter a normalized intensity; use + or a negative value to link to another peak, = to copy the calculated value, or " to copy the value above it

Enter a frequency; use = to copy the calculated value, or " to copy the value above it

Click to clear all assignments for this nucleus

Click to switch between peak ordering for ascending and descending frequency

Click to group/ungroup closely spaced lines for assignments

Enter peak positions in the Frequency/Obs'd column, intensities in the Intensity/Obs'd column