diff --git a/htdocs/admin/ihm.php b/htdocs/admin/ihm.php
index 9d140d5a370..256dd08f9a8 100644
--- a/htdocs/admin/ihm.php
+++ b/htdocs/admin/ihm.php
@@ -1,8 +1,8 @@
 <?php
-/* Copyright (C) 2001-2005	Rodolphe Quiedeville	<rodolphe@quiedeville.org>
+/* Copyright (C) 2001-2005	Rodolphe Quiedeville		<rodolphe@quiedeville.org>
  * Copyright (C) 2004-2015	Laurent Destailleur		<eldy@users.sourceforge.net>
- * Copyright (C) 2005-2012	Regis Houssin			<regis.houssin@capnetworks.com>
- * Copyright (C) 2016       Juanjo Menent           <jmenent@2byte.es>
+ * Copyright (C) 2005-2017	Regis Houssin			<regis.houssin@capnetworks.com>
+ * Copyright (C) 2016		Juanjo Menent			<jmenent@2byte.es>
  *
  * 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
@@ -47,14 +47,21 @@ if (! $user->admin) accessforbidden();
 
 $action = GETPOST('action','aZ09');
 
-
 if (! defined("MAIN_MOTD")) define("MAIN_MOTD","");
 
+// Initialize technical object to manage hooks of page. Note that conf->hooks_modules contains array of hook context
+$contextpage=array('adminihm','globaladmin');
+$hookmanager->initHooks($contextpage);
+
 
 /*
  * Action
  */
 
+$parameters=array();
+$reshook=$hookmanager->executeHooks('doActions',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+if ($reshook < 0) setEventMessages($hookmanager->error, $hookmanager->errors, 'errors');
+
 if (GETPOST('cancel','alpha'))
 {
 	$action='';
diff --git a/htdocs/core/lib/pdf.lib.php b/htdocs/core/lib/pdf.lib.php
index 90d28b7d559..99181d2c294 100644
--- a/htdocs/core/lib/pdf.lib.php
+++ b/htdocs/core/lib/pdf.lib.php
@@ -431,16 +431,16 @@ function pdf_build_address($outputlangs,$sourcecompany,$targetcompany='',$target
     			$stringaddress .= ($stringaddress ? "\n" : '' ).$outputlangs->convToOutputCharset($targetcontact->getFullName($outputlangs,1));
 
     			if (!empty($targetcontact->address)) {
-    				$stringaddress .= ($stringaddress ? "\n" : '' ).$outputlangs->convToOutputCharset(dol_format_address($targetcontact))."\n";
+    				$stringaddress .= ($stringaddress ? "\n" : '' ).$outputlangs->convToOutputCharset(dol_format_address($targetcontact));
     			}else {
-    				$stringaddress .= ($stringaddress ? "\n" : '' ).$outputlangs->convToOutputCharset(dol_format_address($targetcompany))."\n";
+    				$stringaddress .= ($stringaddress ? "\n" : '' ).$outputlangs->convToOutputCharset(dol_format_address($targetcompany));
     			}
     			// Country
     			if (!empty($targetcontact->country_code) && $targetcontact->country_code != $sourcecompany->country_code) {
-    				$stringaddress.=$outputlangs->convToOutputCharset($outputlangs->transnoentitiesnoconv("Country".$targetcontact->country_code))."\n";
+    				$stringaddress.= ($stringaddress ? "\n" : '' ).$outputlangs->convToOutputCharset($outputlangs->transnoentitiesnoconv("Country".$targetcontact->country_code));
     			}
     			else if (empty($targetcontact->country_code) && !empty($targetcompany->country_code) && ($targetcompany->country_code != $sourcecompany->country_code)) {
-    				$stringaddress.=$outputlangs->convToOutputCharset($outputlangs->transnoentitiesnoconv("Country".$targetcompany->country_code))."\n";
+    				$stringaddress.= ($stringaddress ? "\n" : '' ).$outputlangs->convToOutputCharset($outputlangs->transnoentitiesnoconv("Country".$targetcompany->country_code));
     			}
 
     			if (! empty($conf->global->MAIN_PDF_ADDALSOTARGETDETAILS) || preg_match('/targetwithdetails/',$mode))
@@ -472,9 +472,9 @@ function pdf_build_address($outputlangs,$sourcecompany,$targetcompany='',$target
     		}
     		else
     		{
-    			$stringaddress .= ($stringaddress ? "\n" : '' ).$outputlangs->convToOutputCharset(dol_format_address($targetcompany))."\n";
+    			$stringaddress .= ($stringaddress ? "\n" : '' ).$outputlangs->convToOutputCharset(dol_format_address($targetcompany));
     			// Country
-    			if (!empty($targetcompany->country_code) && $targetcompany->country_code != $sourcecompany->country_code) $stringaddress.=$outputlangs->convToOutputCharset($outputlangs->transnoentitiesnoconv("Country".$targetcompany->country_code))."\n";
+    			if (!empty($targetcompany->country_code) && $targetcompany->country_code != $sourcecompany->country_code) $stringaddress.=($stringaddress ? "\n" : '' ).$outputlangs->convToOutputCharset($outputlangs->transnoentitiesnoconv("Country".$targetcompany->country_code));
 
     			if (! empty($conf->global->MAIN_PDF_ADDALSOTARGETDETAILS) || preg_match('/targetwithdetails/',$mode))
     			{
@@ -507,7 +507,7 @@ function pdf_build_address($outputlangs,$sourcecompany,$targetcompany='',$target
     		// Intra VAT
     		if (empty($conf->global->MAIN_TVAINTRA_NOT_IN_ADDRESS))
     		{
-    			if ($targetcompany->tva_intra) $stringaddress.="\n".$outputlangs->transnoentities("VATIntraShort").': '.$outputlangs->convToOutputCharset($targetcompany->tva_intra);
+    			if ($targetcompany->tva_intra) $stringaddress.=($stringaddress ? "\n" : '' ).$outputlangs->transnoentities("VATIntraShort").': '.$outputlangs->convToOutputCharset($targetcompany->tva_intra);
     		}
 
     		// Professionnal Ids
@@ -515,37 +515,37 @@ function pdf_build_address($outputlangs,$sourcecompany,$targetcompany='',$target
     		{
     			$tmp=$outputlangs->transcountrynoentities("ProfId1",$targetcompany->country_code);
     			if (preg_match('/\((.+)\)/',$tmp,$reg)) $tmp=$reg[1];
-    			$stringaddress.="\n".$tmp.': '.$outputlangs->convToOutputCharset($targetcompany->idprof1);
+    			$stringaddress.=($stringaddress ? "\n" : '' ).$tmp.': '.$outputlangs->convToOutputCharset($targetcompany->idprof1);
     		}
     		if (! empty($conf->global->MAIN_PROFID2_IN_ADDRESS) && ! empty($targetcompany->idprof2))
     		{
     			$tmp=$outputlangs->transcountrynoentities("ProfId2",$targetcompany->country_code);
     			if (preg_match('/\((.+)\)/',$tmp,$reg)) $tmp=$reg[1];
-    			$stringaddress.="\n".$tmp.': '.$outputlangs->convToOutputCharset($targetcompany->idprof2);
+    			$stringaddress.=($stringaddress ? "\n" : '' ).$tmp.': '.$outputlangs->convToOutputCharset($targetcompany->idprof2);
     		}
     		if (! empty($conf->global->MAIN_PROFID3_IN_ADDRESS) && ! empty($targetcompany->idprof3))
     		{
     			$tmp=$outputlangs->transcountrynoentities("ProfId3",$targetcompany->country_code);
     			if (preg_match('/\((.+)\)/',$tmp,$reg)) $tmp=$reg[1];
-    			$stringaddress.="\n".$tmp.': '.$outputlangs->convToOutputCharset($targetcompany->idprof3);
+    			$stringaddress.=($stringaddress ? "\n" : '' ).$tmp.': '.$outputlangs->convToOutputCharset($targetcompany->idprof3);
     		}
     		if (! empty($conf->global->MAIN_PROFID4_IN_ADDRESS) && ! empty($targetcompany->idprof4))
     		{
     			$tmp=$outputlangs->transcountrynoentities("ProfId4",$targetcompany->country_code);
     			if (preg_match('/\((.+)\)/',$tmp,$reg)) $tmp=$reg[1];
-    			$stringaddress.="\n".$tmp.': '.$outputlangs->convToOutputCharset($targetcompany->idprof4);
+    			$stringaddress.=($stringaddress ? "\n" : '' ).$tmp.': '.$outputlangs->convToOutputCharset($targetcompany->idprof4);
     		}
     		if (! empty($conf->global->MAIN_PROFID5_IN_ADDRESS) && ! empty($targetcompany->idprof5))
     		{
     		    $tmp=$outputlangs->transcountrynoentities("ProfId5",$targetcompany->country_code);
     		    if (preg_match('/\((.+)\)/',$tmp,$reg)) $tmp=$reg[1];
-    		    $stringaddress.="\n".$tmp.': '.$outputlangs->convToOutputCharset($targetcompany->idprof5);
+    		    $stringaddress.=($stringaddress ? "\n" : '' ).$tmp.': '.$outputlangs->convToOutputCharset($targetcompany->idprof5);
     		}
     		if (! empty($conf->global->MAIN_PROFID6_IN_ADDRESS) && ! empty($targetcompany->idprof6))
     		{
     		    $tmp=$outputlangs->transcountrynoentities("ProfId6",$targetcompany->country_code);
     		    if (preg_match('/\((.+)\)/',$tmp,$reg)) $tmp=$reg[1];
-    		    $stringaddress.="\n".$tmp.': '.$outputlangs->convToOutputCharset($targetcompany->idprof6);
+    		    $stringaddress.=($stringaddress ? "\n" : '' ).$tmp.': '.$outputlangs->convToOutputCharset($targetcompany->idprof6);
     		}
 
     		// Public note
@@ -553,11 +553,11 @@ function pdf_build_address($outputlangs,$sourcecompany,$targetcompany='',$target
     		{
     		    if ($mode == 'source' && ! empty($sourcecompany->note_public))
         		{
-        		    $stringaddress.="\n".dol_string_nohtmltag($sourcecompany->note_public);
+        		    $stringaddress.=($stringaddress ? "\n" : '' ).dol_string_nohtmltag($sourcecompany->note_public);
         		}
         		if (($mode == 'target' || preg_match('/targetwithdetails/',$mode)) && ! empty($targetcompany->note_public))
         		{
-        		    $stringaddress.="\n".dol_string_nohtmltag($targetcompany->note_public);
+        		    $stringaddress.=($stringaddress ? "\n" : '' ).dol_string_nohtmltag($targetcompany->note_public);
         		}
     		}
     	}