@cindex melisma
@cindex extender
+@c leave this as samp. -gp
Melismata are indicated with a horizontal line centered between a syllable
and the next one. Such a line is called an extender line, and it is entered
as @samp{ __ } (note the spaces before and after the two underscore
@cindex hyphens
+@c leave this as samp. -gp
Centered hyphens are entered as @samp{ -- } between syllables of a same word
(note the spaces before and after the two hyphen characters). The hyphen
will be centered between the syllables, and its length will be adjusted