+where @code{@var{musicexpr}} is a music expression.
+
+Patterns that are shorter than one measure are replaced by slashes.
+
+@lilypond[verbatim,quote]
+\relative c'' {
+ \repeat percent 4 { c128 d e f }
+ \repeat percent 4 { c64 d e f }
+ \repeat percent 5 { c32 d e f }
+ \repeat percent 4 { c16 d e f }
+ \repeat percent 4 { c8 d }
+ \repeat percent 4 { c4 }
+ \repeat percent 2 { c2 }
+}
+@end lilypond
+
+Patterns of one or two measures are replaced by percent-like symbols.
+
+@lilypond[verbatim,quote]
+\relative c'' {
+ \repeat percent 2 { c4 d e f }
+ \repeat percent 2 { c2 d }
+ \repeat percent 2 { c1 }
+}
+@end lilypond
+
+@lilypond[verbatim,quote]
+\relative {
+ \repeat percent 3 { c''4 d e f | c2 g' }
+}
+@end lilypond
+
+Patterns that are shorter than one measure but contain mixed durations
+use a double-percent symbol.