diff --git a/include/crm/pengine/common.h b/include/crm/pengine/common.h
index dce019c7c3..983e0c1b87 100644
--- a/include/crm/pengine/common.h
+++ b/include/crm/pengine/common.h
@@ -1,125 +1,125 @@
 /* 
  * Copyright (C) 2004 Andrew Beekhof <andrew@beekhof.net>
  * 
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  * 
  * This software is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * General Public License for more details.
  * 
  * You should have received a copy of the GNU General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */
 #ifndef PE_COMMON__H
 #  define PE_COMMON__H
 #  include <glib.h>
 
 extern gboolean was_processing_error;
 extern gboolean was_processing_warning;
 
 /* order is significant here
  * items listed in order of accending severeness
  * more severe actions take precedent over lower ones
  */
 enum action_fail_response {
     action_fail_ignore,
     action_fail_recover,
     action_fail_migrate,        /* recover by moving it somewhere else */
     action_fail_block,
     action_fail_stop,
     action_fail_standby,
     action_fail_fence
 };
 
 /* the "done" action must be the "pre" action +1 */
 enum action_tasks {
     no_action,
     monitor_rsc,
     stop_rsc,
     stopped_rsc,
     start_rsc,
     started_rsc,
     action_notify,
     action_notified,
     action_promote,
     action_promoted,
     action_demote,
     action_demoted,
     shutdown_crm,
     stonith_node
 };
 
 enum rsc_recovery_type {
     recovery_stop_start,
     recovery_stop_only,
     recovery_block
 };
 
 enum rsc_start_requirement {
-    rsc_req_nothing,
-    rsc_req_quorum,
-    rsc_req_stonith
+    rsc_req_nothing,/* Allowed by custom_action() */
+    rsc_req_quorum, /* Enforced by custom_action() */
+    rsc_req_stonith /* Enforced by native_start_constraints() */
 };
 
 enum rsc_role_e {
     RSC_ROLE_UNKNOWN,
     RSC_ROLE_STOPPED,
     RSC_ROLE_STARTED,
     RSC_ROLE_SLAVE,
     RSC_ROLE_MASTER,
 };
 
 #  define RSC_ROLE_MAX  RSC_ROLE_MASTER+1
 
 #  define	RSC_ROLE_UNKNOWN_S "Unknown"
 #  define	RSC_ROLE_STOPPED_S "Stopped"
 #  define	RSC_ROLE_STARTED_S "Started"
 #  define	RSC_ROLE_SLAVE_S   "Slave"
 #  define	RSC_ROLE_MASTER_S  "Master"
 
 /* *INDENT-OFF* */
 enum pe_print_options {
 
 	pe_print_log		= 0x0001,
 	pe_print_html		= 0x0002,
 	pe_print_ncurses	= 0x0004,
 	pe_print_printf		= 0x0008,
 	pe_print_dev		= 0x0010,
 	pe_print_details	= 0x0020,
 	pe_print_max_details	= 0x0040,
 	pe_print_rsconly	= 0x0080,
 	pe_print_ops		= 0x0100,
 	pe_print_suppres_nl	= 0x0200,
 	pe_print_xml		= 0x0400,
 };
 /* *INDENT-ON* */
 
 const char *task2text(enum action_tasks task);
 enum action_tasks text2task(const char *task);
 enum rsc_role_e text2role(const char *role);
 const char *role2text(enum rsc_role_e role);
 const char *fail2text(enum action_fail_response fail);
 
 const char *pe_pref(GHashTable * options, const char *name);
 void calculate_active_ops(GList * sorted_op_list, int *start_index, int *stop_index);
 
 static inline const char *
 recovery2text(enum rsc_recovery_type type)
 {
     switch (type) {
         case recovery_stop_only:
             return "shutting it down";
         case recovery_stop_start:
             return "attempting recovery";
         case recovery_block:
             return "waiting for an administrator";
     }
     return "Unknown";
 }
 
 #endif