Description:
Given a chord C and a list of expressions representing equivalence
classes, computes an 'inclusion vector' that reports, for each
equivalence class E, the number of members of E that include or
are included in C. Use the optional parameter N to change the pc-
space modulus from its default value of 12.
When N is 12 and CLASSREPS is '(1 2 3 4 5 6), computes the
standard 'interval vector' of CHORD.
The CLASSREPS parameter should be a list of INCL-CLASSREP
expressions, which have a special syntax. For more information,
see PARSE-INCL-CLASSREPS and its documentation.
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