-Repeat variable substitutions work like macros. They take place
-anywhere in a line that the repeat variable name occurs as a token,
-including command and subcommand names. For this reason it is not a
-good idea to select words commonly used in command and subcommand names
-as repeat variable identifiers.
+Dummy variable substitutions work like macros. They take place
+anywhere in a line that the dummy variable name occurs as a token,
+including command and subcommand names. For this reason,
+words commonly used in command and subcommand names should not be used
+as dummy variable identifiers.