[r-t] False Course Heads

[Glenn Taylor]

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I seem to remember reading on one of the ringing e-lists that the
designation of the false course head groups had been changed since Wilson's
book was published. Is this so or did I imagine it?
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The (major) FCH groups fall into three categories: groups containing in &
out of course members, groups containing out-of-course members only and
groups [of which there are only three] with no tenors-together members.
Originally, groups in the first category were labelled using capital
letters, lower case for the second and X, gamma & delta [using Greek
letters] for the third. For reasons that I do not know, this was changed to
lower case, upper case and X,Y,Z (respectively). This may be what you are
referring to.

Glenn