+void reverse_alternative_parts (CT);
+
+/*
+ * Given a list of messages, display information about them on standard
+ * output.
+ *
+ * Arguments are:
+ *
+ * cts - An array of CT elements of messages that need to be
+ * displayed. Array is terminated by a NULL.
+ * headsw - If 1, display a column header.
+ * sizesw - If 1, display the size of the part.
+ * verbosw - If 1, display verbose information
+ * debugsw - If 1, turn on debugging for the output.
+ * disposw - If 1, display MIME part disposition information.
+ *
+ */
+void list_all_messages(CT *cts, int headsw, int sizesw, int verbosw,
+ int debugsw, int disposw);
+
+/*
+ * List the content information of a single MIME part on stdout.
+ *
+ * Arguments are:
+ *
+ * ct - MIME Content structure to display.
+ * toplevel - If set, we're at the top level of a message
+ * realsize - If set, determine the real size of the content
+ * verbose - If set, output verbose information
+ * debug - If set, turn on debugging for the output
+ * dispo - If set, display MIME part disposition information.
+ *
+ * Returns OK on success, NOTOK otherwise.
+ */
+int list_content(CT ct, int toplevel, int realsize, int verbose, int debug,
+ int dispo);
+
+/*
+ * Display content-appropriate information on MIME parts, descending recursively
+ * into multipart content if appropriate. Uses list_content() for displaying
+ * generic information.
+ *
+ * Arguments and return value are the same as list_content().
+ */
+int list_switch(CT ct, int toplevel, int realsize, int verbose, int debug,
+ int dispo);
+
+/*
+ * Given a linked list of parameters, build an output string for them. This
+ * string is designed to be concatenated on an already-built header.
+ *
+ * Arguments are:
+ *
+ * initialwidth - Current width of the header. Used to compute when to wrap
+ * parameters on the first line. The following lines will
+ * be prefixed by a tab (\t) character.
+ * params - Pointer to head of linked list of parameters.
+ * offsetout - The final line offset after all the parameters have been
+ * output. May be NULL.
+ * external - If set, outputting an external-body type and will not
+ * output a "body" parameter.
+
+ * Returns a pointer to the resulting parameter string. This string must
+ * be free()'d by the caller. Returns NULL on error.
+ */
+char *output_params(size_t initialwidth, PM params, int *offsetout,
+ int external);
+
+/*
+ * Encode a parameter value using RFC 2231 encode.
+ *
+ * Arguments are:
+ *
+ * pm - PM containing the parameter value and related info.
+ * output - Output buffer.
+ * len - Size, in octets, of output buffer.
+ * valuelen - Number of characters in the value
+ * valueoff - Offset into value field (pm->pm_value).
+ * index - If 0, output character set and language tag.
+ */
+size_t encode_param(PM pm, char *output, size_t len, size_t valuelen,
+ size_t valueoff, int index);
+
+/*
+ * Add a parameter to the parameter linked list.
+ *
+ * Arguments are:
+ *
+ * first - Pointer to head of linked list
+ * last - Pointer to tail of linked list
+ * name - Name of parameter
+ * value - Value of parameter
+ * nocopy - If set, will use the pointer values directly for "name"
+ * and "value" instead of making their own copy. These
+ * pointers will be free()'d later by the MIME routines, so
+ * they should not be used after calling this function!
+ *
+ * Returns allocated parameter element
+ */
+PM add_param(PM *first, PM *last, char *name, char *value, int nocopy);
+
+/*
+ * Replace (or add) a parameter to the parameter linked list.
+ *
+ * If the named parameter already exists on the parameter linked list,
+ * replace the value with the new one. Otherwise add it to the linked
+ * list. All parameters are identical to add_param().
+ */
+PM replace_param(PM *first, PM *last, char *name, char *value, int nocopy);
+
+/*
+ * Retrieve a parameter value from a parameter linked list. Convert to the
+ * local character set if required.
+ *
+ * Arguments are:
+ *
+ * first - Pointer to head of parameter linked list.
+ * name - Name of parameter.
+ * replace - If characters in the parameter list cannot be converted to
+ * the local character set, replace with this character.
+ * fetchonly - If true, return pointer to original value, no conversion
+ * performed.
+ *
+ * Returns parameter value if found, NULL otherwise. Memory must be free()'d
+ * unless fetchonly is set.
+ */
+
+char *get_param(PM first, const char *name, char replace, int fetchonly);
+
+/*
+ * Fetch a parameter value from a parameter structure, converting it to
+ * the local character set.
+ *
+ * Arguments are:
+ *
+ * pm - Pointer to parameter structure
+ * replace - If characters in the parameter list cannot be converted to
+ * the local character set, replace with this character.
+ *
+ * Returns a pointer to the parameter value. Memory is stored in an
+ * internal buffer, so the returned value is only valid until the next
+ * call to get_param_value() or get_param() (get_param() uses get_param_value()
+ * internally).
+ */
+char *get_param_value(PM pm, char replace);