--- a/include/ecrt.h	Wed Jun 14 10:23:02 2006 +0000
+++ b/include/ecrt.h	Tue Jun 20 14:40:04 2006 +0000
@@ -160,7 +160,10 @@
 int ecrt_slave_sdo_read(ec_slave_t *slave, uint16_t sdo_index,
                         uint8_t sdo_subindex, uint8_t *data, size_t *size);
 
-int ecrt_slave_write_alias(ec_slave_t *slave, uint16_t alias);
+int ecrt_slave_write_alias(ec_slave_t *slave, uint16_t alias); // deprecated!
+
+int ecrt_slave_field_size(ec_slave_t *slave, const char *field_name,
+                          unsigned int field_index, size_t size);
 
 /******************************************************************************
  *  Bitwise read/write macros