diff -r 363205c2ebaf -r 69393cf60399 master/domain.c
--- a/master/domain.c	Fri Jul 04 12:05:21 2008 +0000
+++ b/master/domain.c	Fri Jul 04 12:06:10 2008 +0000
@@ -277,6 +277,8 @@
 
 /*****************************************************************************/
 
+/** Get the number of FMMU configurations of the domain.
+ */
 unsigned int ec_domain_fmmu_count(const ec_domain_t *domain)
 {
     const ec_fmmu_config_t *fmmu;
@@ -291,15 +293,17 @@
 
 /*****************************************************************************/
 
+/** Get a certain FMMU configuration via its position in the list.
+ */
 const ec_fmmu_config_t *ec_domain_find_fmmu(
-        const ec_domain_t *domain,
-        unsigned int index
+        const ec_domain_t *domain, /**< EtherCAT domain. */
+        unsigned int pos /**< List position. */
         )
 {
     const ec_fmmu_config_t *fmmu;
 
     list_for_each_entry(fmmu, &domain->fmmu_configs, list) {
-        if (index--)
+        if (pos--)
             continue;
         return fmmu;
     }