+/* seq_read.h -- read the .mh_sequence file and
+ * -- initialize sequence information
+ *
+ * This code is Copyright (c) 2017, by the authors of nmh. See the
+ * COPYRIGHT file in the root directory of the nmh distribution for
+ * complete copyright information. */
+
+/*
+ * Read the sequence files for the folder referenced in the given
+ * struct msgs and populate the sequence entries in the struct msgs.
+ *
+ * Arguments:
+ *
+ * mp - Folder structure to add sequence entries to
+ * lockflag - If true, obtain a write lock on the sequence file.
+ * Additionally, the sequence file will remain open
+ * and a pointer to the filehandle will be stored in
+ * folder structure, where it will later be used by
+ * seq_save().
+ *
+ * Return values:
+ * OK - successfully read the sequence files, or they don't exist
+ * NOTOK - failed to lock sequence file
+ */
+int seq_read(struct msgs *, int);