-.B Nmh
-provides the ability to select all messages not elements of a
-user-defined sequence. To do this, the user should define the entry
-\*(lqSequence\-Negation\*(rq in the
-.B nmh
-profile file; its value
-may be any string. This string is then used to preface an existing
-user-defined sequence name. This specification then refers to those
-messages not elements of the specified sequence name. For example, if
-the profile entry is:
+.B Mmh
+provides the ability to select all messages
+.B not
+elements of a user-defined sequence.
+A special string is used to preface an existing user-defined
+sequence name. This specification then refers to those
+messages not elements of the specified sequence name.
+The default negation prefix is the exlamation mark `!',
+but it may be change to any string, by defining the entry
+`Sequence\-Negation' in the
+.B mmh
+profile file.
+For example, if the profile entry is: