Function splat2( label, loc1, loc2 )

Description:
Displays two spectra in the same (SPLAT) viewer. This may be useful to compare two spectra which correspond to the same table row.
Parameters:
label (String)
identifies the window in which the spectra will be displayed
loc1 (String)
location of the first spectrum
loc2 (String)
location of the second spectrum
Return Value (String):
short report message
Signature:
String splat2(String, String, String)