diff --git a/swad_changelog.h b/swad_changelog.h
index 82ed36744..cfb9e8f7d 100644
--- a/swad_changelog.h
+++ b/swad_changelog.h
@@ -254,13 +254,14 @@
 /****************************** Public constants *****************************/
 /*****************************************************************************/
 
-#define Log_PLATFORM_VERSION	"SWAD 17.23.1 (2017-10-10)"
+#define Log_PLATFORM_VERSION	"SWAD 17.23.2 (2017-10-10)"
 #define CSS_FILE		"swad17.0.css"
 #define JS_FILE			"swad17.17.1.js"
 
 // Number of lines (includes comments but not blank lines) has been got with the following command:
 // nl swad*.c swad*.h css/swad*.css py/swad*.py js/swad*.js soap/swad*?.h sql/swad*.sql | tail -1
 /*
+        Version 17.23.2:  Oct 10, 2017  Code refactoring in filter of projects. (234137 lines)
         Version 17.23.1:  Oct 10, 2017  Changes in selectors of departments. (234133 lines)
         Version 17.23:    Oct 10, 2017  New filter to select preassigned/non-preassigned projects.
 					New filter to select hidden/visible projects.
diff --git a/swad_global.c b/swad_global.c
index 63c201071..8e4f7ce43 100644
--- a/swad_global.c
+++ b/swad_global.c
@@ -350,14 +350,14 @@ void Gbl_InitializeGlobals (void)
    Gbl.Asgs.SelectedOrder = Asg_ORDER_DEFAULT;
 
    /* Projects */
+   Gbl.Prjs.Filter.My_All = Prj_WHOSE_PROJECTS_DEFAULT;
+   Gbl.Prjs.Filter.PreNon = Prj_PREASSIGNED_DEFAULT |
+	                    Prj_NONPREASSIG_DEFAULT;
+   Gbl.Prjs.Filter.HidVis = Prj_HIDDEN_DEFAULT |
+	                    Prj_VISIBL_DEFAULT;
    Gbl.Prjs.LstIsRead = false;	// List is not read
    Gbl.Prjs.Num = 0;
    Gbl.Prjs.LstPrjCods = NULL;
-   Gbl.Prjs.My_All = Prj_WHOSE_PROJECTS_DEFAULT;
-   Gbl.Prjs.PreNon = Prj_PREASSIGNED_DEFAULT |
-	             Prj_NONPREASSIG_DEFAULT;
-   Gbl.Prjs.HidVis = Prj_HIDDEN_DEFAULT |
-	             Prj_VISIBL_DEFAULT;
    Gbl.Prjs.SelectedOrder = Prj_ORDER_DEFAULT;
    Gbl.Prjs.PrjCod = -1L;
 
diff --git a/swad_global.h b/swad_global.h
index ec205ba79..f5cf55a96 100644
--- a/swad_global.h
+++ b/swad_global.h
@@ -572,13 +572,16 @@ struct Globals
      } Asgs;
    struct
      {
+      struct
+        {
+         Prj_WhoseProjects_t My_All;	// Show my / all projects
+         unsigned PreNon;			// Show preassigned / non preassigned projects
+         unsigned HidVis;			// Show hidden / visible projects
+        } Filter;
       bool LstIsRead;		// Is the list already read from database, or it needs to be read?
       unsigned Num;		// Number of projects
       long *LstPrjCods;		// List of project codes
       Prj_Order_t SelectedOrder;
-      Prj_WhoseProjects_t My_All;	// Show my / all projects
-      unsigned PreNon;			// Show preassigned / non preassigned projects
-      unsigned HidVis;			// Show hidden / visible projects
       unsigned CurrentPage;
       long PrjCod;		// Current project
      } Prjs;
diff --git a/swad_pagination.c b/swad_pagination.c
index 3cbef0cb8..8df8a36df 100644
--- a/swad_pagination.c
+++ b/swad_pagination.c
@@ -164,9 +164,9 @@ void Pag_WriteLinksToPages (Pag_WhatPaginate_t WhatPaginate,
                break;
             case Pag_PROJECTS:
                Act_FormStartAnchor (ActSeePrj,Pagination->Anchor);
-               Prj_PutParams (Gbl.Prjs.My_All,
-                              Gbl.Prjs.PreNon,
-                              Gbl.Prjs.HidVis,
+               Prj_PutParams (Gbl.Prjs.Filter.My_All,
+                              Gbl.Prjs.Filter.PreNon,
+                              Gbl.Prjs.Filter.HidVis,
                               Gbl.Prjs.SelectedOrder,
                               1,
                               -1L);
@@ -274,9 +274,9 @@ void Pag_WriteLinksToPages (Pag_WhatPaginate_t WhatPaginate,
                break;
             case Pag_PROJECTS:
                Act_FormStartAnchor (ActSeePrj,Pagination->Anchor);
-               Prj_PutParams (Gbl.Prjs.My_All,
-                              Gbl.Prjs.PreNon,
-                              Gbl.Prjs.HidVis,
+               Prj_PutParams (Gbl.Prjs.Filter.My_All,
+                              Gbl.Prjs.Filter.PreNon,
+                              Gbl.Prjs.Filter.HidVis,
                               Gbl.Prjs.SelectedOrder,
                               1,
                               -1L);
@@ -370,9 +370,9 @@ void Pag_WriteLinksToPages (Pag_WhatPaginate_t WhatPaginate,
                break;
             case Pag_PROJECTS:
                Act_FormStartAnchor (ActSeePrj,Pagination->Anchor);
-               Prj_PutParams (Gbl.Prjs.My_All,
-                              Gbl.Prjs.PreNon,
-                              Gbl.Prjs.HidVis,
+               Prj_PutParams (Gbl.Prjs.Filter.My_All,
+                              Gbl.Prjs.Filter.PreNon,
+                              Gbl.Prjs.Filter.HidVis,
                               Gbl.Prjs.SelectedOrder,
                               Pagination->LeftPage,
                               -1L);
@@ -477,9 +477,9 @@ void Pag_WriteLinksToPages (Pag_WhatPaginate_t WhatPaginate,
                   break;
 	       case Pag_PROJECTS:
 		  Act_FormStartAnchor (ActSeePrj,Pagination->Anchor);
-		  Prj_PutParams (Gbl.Prjs.My_All,
-                                 Gbl.Prjs.PreNon,
-                                 Gbl.Prjs.HidVis,
+		  Prj_PutParams (Gbl.Prjs.Filter.My_All,
+                                 Gbl.Prjs.Filter.PreNon,
+                                 Gbl.Prjs.Filter.HidVis,
                                  Gbl.Prjs.SelectedOrder,
                                  NumPage,
                                  -1L);
@@ -572,9 +572,9 @@ void Pag_WriteLinksToPages (Pag_WhatPaginate_t WhatPaginate,
                break;
 	    case Pag_PROJECTS:
 	       Act_FormStartAnchor (ActSeePrj,Pagination->Anchor);
-	       Prj_PutParams (Gbl.Prjs.My_All,
-			      Gbl.Prjs.PreNon,
-			      Gbl.Prjs.HidVis,
+	       Prj_PutParams (Gbl.Prjs.Filter.My_All,
+			      Gbl.Prjs.Filter.PreNon,
+			      Gbl.Prjs.Filter.HidVis,
                               Gbl.Prjs.SelectedOrder,
 			      Pagination->RightPage,
 			      -1L);
@@ -666,9 +666,9 @@ void Pag_WriteLinksToPages (Pag_WhatPaginate_t WhatPaginate,
                break;
 	    case Pag_PROJECTS:
 	       Act_FormStartAnchor (ActSeePrj,Pagination->Anchor);
-	       Prj_PutParams (Gbl.Prjs.My_All,
-			      Gbl.Prjs.PreNon,
-			      Gbl.Prjs.HidVis,
+	       Prj_PutParams (Gbl.Prjs.Filter.My_All,
+			      Gbl.Prjs.Filter.PreNon,
+			      Gbl.Prjs.Filter.HidVis,
                               Gbl.Prjs.SelectedOrder,
 			      Pagination->NumPags,
 			      -1L);
diff --git a/swad_project.c b/swad_project.c
index 7f97cca38..7e48e31e8 100644
--- a/swad_project.c
+++ b/swad_project.c
@@ -340,12 +340,12 @@ static void Prj_ShowFormToSelMy_AllPrjs (void)
 	My_All++)
      {
       fprintf (Gbl.F.Out,"<div class=\"%s\">",
-	       (Gbl.Prjs.My_All == My_All) ? "PREF_ON" :
-					     "PREF_OFF");
+	       (Gbl.Prjs.Filter.My_All == My_All) ? "PREF_ON" :
+					            "PREF_OFF");
       Act_FormStart (ActSeePrj);
       Prj_PutParams (My_All,
-                     Gbl.Prjs.PreNon,
-                     Gbl.Prjs.HidVis,
+                     Gbl.Prjs.Filter.PreNon,
+                     Gbl.Prjs.Filter.HidVis,
                      Gbl.Prjs.SelectedOrder,
                      Gbl.Prjs.CurrentPage,
                      -1L);
@@ -376,12 +376,12 @@ static void Prj_ShowFormToSelPreassignedOrNotProjects (void)
 	PreNon++)
      {
       fprintf (Gbl.F.Out,"<div class=\"%s\">",
-	       (Gbl.Prjs.PreNon & (1 << PreNon)) ? "PREF_ON" :
-						   "PREF_OFF");
+	       (Gbl.Prjs.Filter.PreNon & (1 << PreNon)) ? "PREF_ON" :
+						          "PREF_OFF");
       Act_FormStart (ActSeePrj);
-      Prj_PutParams (Gbl.Prjs.My_All,
-                     Gbl.Prjs.PreNon ^ (1 << PreNon),	// Toggle
-                     Gbl.Prjs.HidVis,
+      Prj_PutParams (Gbl.Prjs.Filter.My_All,
+                     Gbl.Prjs.Filter.PreNon ^ (1 << PreNon),	// Toggle
+                     Gbl.Prjs.Filter.HidVis,
                      Gbl.Prjs.SelectedOrder,
                      Gbl.Prjs.CurrentPage,
                      -1L);
@@ -417,12 +417,12 @@ static void Prj_ShowFormToSelHiddenVisiblProjects (void)
 	HidVis++)
      {
       fprintf (Gbl.F.Out,"<div class=\"%s\">",
-	       (Gbl.Prjs.HidVis & (1 << HidVis)) ? "PREF_ON" :
-						   "PREF_OFF");
+	       (Gbl.Prjs.Filter.HidVis & (1 << HidVis)) ? "PREF_ON" :
+						          "PREF_OFF");
       Act_FormStart (ActSeePrj);
-      Prj_PutParams (Gbl.Prjs.My_All,
-                     Gbl.Prjs.PreNon,
-                     Gbl.Prjs.HidVis ^ (1 << HidVis),	// Toggle
+      Prj_PutParams (Gbl.Prjs.Filter.My_All,
+                     Gbl.Prjs.Filter.PreNon,
+                     Gbl.Prjs.Filter.HidVis ^ (1 << HidVis),	// Toggle
                      Gbl.Prjs.SelectedOrder,
                      Gbl.Prjs.CurrentPage,
                      -1L);
@@ -445,9 +445,9 @@ static void Prj_ShowFormToSelHiddenVisiblProjects (void)
 
 static void Prj_PutCurrentParams (void)
   {
-   Prj_PutParams (Gbl.Prjs.My_All,
-                  Gbl.Prjs.PreNon,
-                  Gbl.Prjs.HidVis,
+   Prj_PutParams (Gbl.Prjs.Filter.My_All,
+                  Gbl.Prjs.Filter.PreNon,
+                  Gbl.Prjs.Filter.HidVis,
                   Gbl.Prjs.SelectedOrder,
 		  Gbl.Prjs.CurrentPage,
                   Gbl.Prjs.PrjCod);
@@ -513,20 +513,20 @@ static void Prj_PutHiddenParamHidVis (unsigned HidVis)
 
 static void Prj_GetHiddenParamMy_All (void)
   {
-   Gbl.Prjs.My_All = (Prj_WhoseProjects_t) Par_GetParToUnsignedLong (ParamMy_AllName,
-                                                                     0,
-                                                                     Prj_NUM_WHOSE_PROJECTS - 1,
-                                                                     Prj_WHOSE_PROJECTS_DEFAULT);
+   Gbl.Prjs.Filter.My_All = (Prj_WhoseProjects_t) Par_GetParToUnsignedLong (ParamMy_AllName,
+                                                                            0,
+                                                                            Prj_NUM_WHOSE_PROJECTS - 1,
+                                                                            Prj_WHOSE_PROJECTS_DEFAULT);
   }
 
 static void Prj_GetHiddenParamPreNon (void)
   {
-   Gbl.Prjs.PreNon = (unsigned) Par_GetParToUnsignedLong (ParamPreNonName,
-                                                          0,
-                                                          (1 << Prj_PREASSIGNED) |
-                                                          (1 << Prj_NONPREASSIG),
-                                                          (unsigned) Prj_PREASSIGNED_DEFAULT |
-                                                          (unsigned) Prj_NONPREASSIG_DEFAULT);
+   Gbl.Prjs.Filter.PreNon = (unsigned) Par_GetParToUnsignedLong (ParamPreNonName,
+                                                                 0,
+                                                                 (1 << Prj_PREASSIGNED) |
+                                                                 (1 << Prj_NONPREASSIG),
+                                                                 (unsigned) Prj_PREASSIGNED_DEFAULT |
+                                                                 (unsigned) Prj_NONPREASSIG_DEFAULT);
   }
 
 static void Prj_GetHiddenParamHidVis (void)
@@ -534,17 +534,17 @@ static void Prj_GetHiddenParamHidVis (void)
    switch (Gbl.Usrs.Me.Role.Logged)
      {
       case Rol_STD:	// Students can view only visible projects
-	 Gbl.Prjs.HidVis = (1 << Prj_VISIBL);	// Only visible projects
+	 Gbl.Prjs.Filter.HidVis = (1 << Prj_VISIBL);	// Only visible projects
 	 break;
       case Rol_NET:
       case Rol_TCH:
       case Rol_SYS_ADM:
-	 Gbl.Prjs.HidVis = (unsigned) Par_GetParToUnsignedLong (ParamHidVisName,
-								0,
-								(1 << Prj_HIDDEN) |
-								(1 << Prj_VISIBL),
-								(unsigned) Prj_HIDDEN_DEFAULT |
-								(unsigned) Prj_VISIBL_DEFAULT);
+	 Gbl.Prjs.Filter.HidVis = (unsigned) Par_GetParToUnsignedLong (ParamHidVisName,
+								       0,
+								       (1 << Prj_HIDDEN) |
+								       (1 << Prj_VISIBL),
+								       (unsigned) Prj_HIDDEN_DEFAULT |
+								       (unsigned) Prj_VISIBL_DEFAULT);
 	 break;
       default:
 	 Lay_ShowErrorAndExit ("Wrong role.");
@@ -589,9 +589,9 @@ static void Prj_ShowProjectsHead (bool PrintView)
       if (!PrintView)
 	{
 	 Act_FormStart (ActSeePrj);
-	 Prj_PutParams (Gbl.Prjs.My_All,
-			Gbl.Prjs.PreNon,
-			Gbl.Prjs.HidVis,
+	 Prj_PutParams (Gbl.Prjs.Filter.My_All,
+			Gbl.Prjs.Filter.PreNon,
+			Gbl.Prjs.Filter.HidVis,
                         Order,
                         Gbl.Prjs.CurrentPage,
                         -1L);
@@ -2087,13 +2087,13 @@ void Prj_GetListProjects (void)
       Prj_FreeListProjects ();
 
    /***** Get list of projects from database *****/
-   if (Gbl.Prjs.PreNon == 0 ||	// All selectors are off
-       Gbl.Prjs.HidVis == 0)	// All selectors are off
+   if (Gbl.Prjs.Filter.PreNon == 0 ||	// All selectors are off
+       Gbl.Prjs.Filter.HidVis == 0)	// All selectors are off
       Gbl.Prjs.Num = 0;		// Nothing to get from database
    else
      {
       /* Preassigned subquery */
-      switch (Gbl.Prjs.PreNon)
+      switch (Gbl.Prjs.Filter.PreNon)
 	{
 	 case (1 << Prj_PREASSIGNED):
 	    Str_Copy (PreNonSubQuery," AND projects.Preassigned='Y'",
@@ -2118,7 +2118,7 @@ void Prj_GetListProjects (void)
 	 case Rol_NET:
 	 case Rol_TCH:
 	 case Rol_SYS_ADM:
-	    switch (Gbl.Prjs.HidVis)
+	    switch (Gbl.Prjs.Filter.HidVis)
 	      {
 	       case (1 << Prj_HIDDEN):
 		  Str_Copy (HidVisSubQuery," AND projects.Hidden='Y'",
@@ -2165,7 +2165,7 @@ void Prj_GetListProjects (void)
 	}
 
       /* Query */
-      if (Gbl.Prjs.My_All == Prj_MY__PROJECTS)
+      if (Gbl.Prjs.Filter.My_All == Prj_MY__PROJECTS)
 	 switch (Gbl.Prjs.SelectedOrder)
 	   {
 	    case Prj_ORDER_START_TIME: