diff --git a/PackageInfo.g b/PackageInfo.g
index 74155cc..217636b 100644
--- a/PackageInfo.g
+++ b/PackageInfo.g
@@ -11,7 +11,7 @@ SetPackageInfo( rec(
 PackageName := "CatReps",
 Subtitle := "Representations and cohomology of finite categories",
 Version := Maximum( [
-                   "2020.02.23", ## Mohamed's version
+                   "2020.04.02", ## Mohamed's version
                    ## this line prevents merge conflicts
                    "2020.01.01", ## Tibor's version
                    ## this line prevents merge conflicts
@@ -110,7 +110,7 @@ Dependencies := rec(
                    [ "SubcategoriesForCAP", ">= 2020.02.02" ],
                    [ "MatricesForHomalg", ">= 2020.02.02" ],
                    [ "Toposes", ">= 2020.02.19" ],
-                   [ "FunctorCategories", ">= 2020.02.23" ],
+                   [ "FunctorCategories", ">= 2020.04.02" ],
                    ],
   SuggestedOtherPackages := [ ],
   ExternalConditions := [ ],
diff --git a/examples/ConcreteCategoryWithEndomorphismGroups.g b/examples/ConcreteCategoryWithEndomorphismGroups.g
index fa6b0c6..d0973ea 100644
--- a/examples/ConcreteCategoryWithEndomorphismGroups.g
+++ b/examples/ConcreteCategoryWithEndomorphismGroups.g
@@ -80,25 +80,24 @@ CatReps := CategoryOfRepresentations( kq, kmat );
 #! The category of functors: Bialgebroid generated by the right quiver
 #! q(2)[a:1->1,b:1->2,c:2->2] -> Category of matrices over GF(3)
 InfoOfInstalledOperationsOfCategory( CatReps );
-#! 102 primitive operations were used to derive 207 operations for this category which
+#! 109 primitive operations were used to derive 230 operations for this category which
 #! * IsLinearCategoryOverCommutativeRing
 #! * IsSymmetricMonoidalCategory
 #! * IsAbelianCategory
 CommutativeRingOfLinearCategory( CatReps );
 #! GF(3)
 zero := ZeroObject( CatReps );
-#! <A zero object in The category of functors: Bialgebroid generated by the
-#! right quiver q(2)[a:1->1,b:1->2,c:2->2] -> Category of matrices over GF(3)>
+#! <(1)->0, (2)->0; (a)->0x0, (b)->0x0, (c)->0x0>
 Display( zero );
 #! An object in The category of functors: Bialgebroid generated by the
 #! right quiver q(2)[a:1->1,b:1->2,c:2->2] -> Category of matrices
 #! over GF(3) defined by the following data:
 #! 
 #! 
-#! Image of (1):
+#! Image of <(1)>:
 #! A vector space object over GF(3) of dimension 0
 #! 
-#! Image of (2):
+#! Image of <(2)>:
 #! A vector space object over GF(3) of dimension 0
 #! 
 #! Image of (1)-[{ Z(3)^0*(a) }]->(1):
@@ -118,18 +117,17 @@ Display( zero );
 #! 
 #! A zero, identity morphism in Category of matrices over GF(3)
 unit := TensorUnit( CatReps );
-#! <An object in The category of functors: Bialgebroid generated by the
-#! right quiver q(2)[a:1->1,b:1->2,c:2->2] -> Category of matrices over GF(3)>
+#! <(1)->1, (2)->1; (a)->1x1, (b)->1x1, (c)->1x1>
 Display( unit );
 #! An object in The category of functors: Bialgebroid generated by the
 #! right quiver q(2)[a:1->1,b:1->2,c:2->2] -> Category of matrices
 #! over GF(3) defined by the following data:
 #! 
 #! 
-#! Image of (1):
+#! Image of <(1)>:
 #! A vector space object over GF(3) of dimension 1
 #! 
-#! Image of (2):
+#! Image of <(2)>:
 #! A vector space object over GF(3) of dimension 1
 #! 
 #! Image of (1)-[{ Z(3)^0*(a) }]->(1):
@@ -188,8 +186,7 @@ Display( f );
 #! 
 #! A morphism in Category of matrices over GF(3)
 nine := AsObjectInHomCategory( kq, [ V1, V2 ], [ d, e, f ] );
-#! <An object in The category of functors: Bialgebroid generated by the
-#! right quiver q(2)[a:1->1,b:1->2,c:2->2] -> Category of matrices over GF(3)>
+#! <(1)->5, (2)->4; (a)->5x5, (b)->5x4, (c)->4x4>
 nine(kq.1);
 #! <A vector space object over GF(3) of dimension 5>
 nine(kq.2);
@@ -207,8 +204,7 @@ Display( nine(kq.b) );
 IsWellDefined( nine );
 #! true
 fortyone := TensorProductOnObjects( nine, nine );
-#! <An object in The category of functors: Bialgebroid generated by the
-#! right quiver q(2)[a:1->1,b:1->2,c:2->2] -> Category of matrices over GF(3)>
+#! <(1)->25, (2)->16; (a)->25x25, (b)->25x16, (c)->16x16>
 IsWellDefined( fortyone );
 #! true
 fortyone( kq.1 );
@@ -227,10 +223,10 @@ Display( fortyone );
 #! over GF(3) defined by the following data:
 #! 
 #! 
-#! Image of (1):
+#! Image of <(1)>:
 #! A vector space object over GF(3) of dimension 25
 #! 
-#! Image of (2):
+#! Image of <(2)>:
 #! A vector space object over GF(3) of dimension 16
 #! 
 #! Image of (1)-[{ Z(3)^0*(a) }]->(1):
@@ -318,21 +314,19 @@ d := List( etas, eta -> List( SetOfObjects( kq ),
 #! [ [ 3, 0 ], [ 3, 1 ], [ 3, 3 ], [ 3, 3 ], [ 0, 3 ],
 #!   [ 3, 0 ], [ 3, 0 ], [ 3, 0 ], [ 1, 3 ], [ 3, 3 ] ]
 eta := etas[3];
-#! <A monomorphism in The category of functors: Bialgebroid generated by the
-#! right quiver q(2)[a:1->1,b:1->2,c:2->2] -> Category of matrices over GF(3)>
+#! <(1)->3x25, (2)->3x16>
 six := Source( eta );
-#! <An object in The category of functors: Bialgebroid generated by the
-#! right quiver q(2)[a:1->1,b:1->2,c:2->2] -> Category of matrices over GF(3)>
+#! <(1)->3, (2)->3; (a)->3x3, (b)->3x3, (c)->3x3>
 Display( six );
 #! An object in The category of functors: Bialgebroid generated by the
 #! right quiver q(2)[a:1->1,b:1->2,c:2->2] -> Category of matrices
 #! over GF(3) defined by the following data:
 #! 
 #! 
-#! Image of (1):
+#! Image of <(1)>:
 #! A vector space object over GF(3) of dimension 3
 #! 
-#! Image of (2):
+#! Image of <(2)>:
 #! A vector space object over GF(3) of dimension 3
 #! 
 #! Image of (1)-[{ Z(3)^0*(a) }]->(1):
@@ -358,21 +352,19 @@ Display( six );
 #! 
 #! A morphism in Category of matrices over GF(3)
 eta2 := TensorProductOnMorphisms( eta, eta );
-#! <A morphism in The category of functors: Bialgebroid generated by the
-#! right quiver q(2)[a:1->1,b:1->2,c:2->2] -> Category of matrices over GF(3)>
+#! <(1)->9x625, (2)->9x256>
 thirtyfive := CokernelObject( eta );
-#! <An object in The category of functors: Bialgebroid generated by the
-#! right quiver q(2)[a:1->1,b:1->2,c:2->2] -> Category of matrices over GF(3)>
+#! <(1)->22, (2)->13; (a)->22x22, (b)->22x13, (c)->13x13>
 Display( thirtyfive );
 #! An object in The category of functors: Bialgebroid generated by the
 #! right quiver q(2)[a:1->1,b:1->2,c:2->2] -> Category of matrices
 #! over GF(3) defined by the following data:
 #! 
 #! 
-#! Image of (1):
+#! Image of <(1)>:
 #! A vector space object over GF(3) of dimension 22
 #! 
-#! Image of (2):
+#! Image of <(2)>:
 #! A vector space object over GF(3) of dimension 13
 #! 
 #! Image of (1)-[{ Z(3)^0*(a) }]->(1):
@@ -446,23 +438,21 @@ Display( thirtyfive );
 #! 
 #! A morphism in Category of matrices over GF(3)
 iso := UniversalMorphismFromDirectSum( etas );
-#! <A morphism in The category of functors: Bialgebroid generated by the
-#! right quiver q(2)[a:1->1,b:1->2,c:2->2] -> Category of matrices over GF(3)>
+#! <(1)->25x25, (2)->16x16>
 IsIsomorphism( iso );
 #! true
 iso;
-#! <An isomorphism in The category of functors: Bialgebroid generated by the
-#! right quiver q(2)[a:1->1,b:1->2,c:2->2] -> Category of matrices over GF(3)>
+#! <(1)->25x25, (2)->16x16>
 Display( Source( iso ) );
 #! An object in The category of functors: Bialgebroid generated by the
 #! right quiver q(2)[a:1->1,b:1->2,c:2->2] -> Category of matrices
 #! over GF(3) defined by the following data:
 #! 
 #! 
-#! Image of (1):
+#! Image of <(1)>:
 #! A vector space object over GF(3) of dimension 25
 #! 
-#! Image of (2):
+#! Image of <(2)>:
 #! A vector space object over GF(3) of dimension 16
 #! 
 #! Image of (1)-[{ Z(3)^0*(a) }]->(1):
@@ -550,7 +540,7 @@ Display( iso );
 #! over GF(3) defined by the following data:
 #! 
 #! 
-#! Image of (1):
+#! Image of <(1)>:
 #!  . . 1 . . . 2 1 . 1 1 . . 2 . . . 1 . . . . . . .
 #!  . . . . . . . . . . . . . . . . . . . . . . 1 . .
 #!  . 1 2 . 2 1 1 2 2 2 1 . . 2 . . 1 . . 2 2 . . 1 .
@@ -580,7 +570,7 @@ Display( iso );
 #! An isomorphism in Category of matrices over GF(3)
 #! 
 #! 
-#! Image of (2):
+#! Image of <(2)>:
 #!  . . . . . . . . . . . . . . . 1
 #!  . . . . . . . . . . . . 1 . . .
 #!  . . . . . . . . . . . . . 1 . .
@@ -600,19 +590,17 @@ Display( iso );
 #! 
 #! An isomorphism in Category of matrices over GF(3)
 proj1 := YonedaProjective( CatReps, kq.1 );
-#! <A projective object in The category of functors: Bialgebroid
-#!  generated by the right quiver q(2)[a:1->1,b:1->2,c:2->2]
-#!  -> Category of matrices over GF(3)>
+#! <(1)->3, (2)->3; (a)->3x3, (b)->3x3, (c)->3x3>
 Display( proj1 );
 #! An object in The category of functors: Bialgebroid generated by the
 #! right quiver q(2)[a:1->1,b:1->2,c:2->2] -> Category of matrices
 #! over GF(3) defined by the following data:
 #! 
 #! 
-#! Image of (1):
+#! Image of <(1)>:
 #! A vector space object over GF(3) of dimension 3
 #! 
-#! Image of (2):
+#! Image of <(2)>:
 #! A vector space object over GF(3) of dimension 3
 #! 
 #! Image of (1)-[{ Z(3)^0*(a) }]->(1):
@@ -638,28 +626,30 @@ Display( proj1 );
 #! 
 #! A morphism in Category of matrices over GF(3)
 proj2 := YonedaProjective( CatReps, kq.2 );
-#! <A projective object in The category of functors: Bialgebroid
-#!  generated by the right quiver q(2)[a:1->1,b:1->2,c:2->2]
-#!  -> Category of matrices over GF(3)>
+#! <(1)->0, (2)->3; (a)->0x0, (b)->0x3, (c)->3x3>
 Display( proj2 );
 #! An object in The category of functors: Bialgebroid generated by the
 #! right quiver q(2)[a:1->1,b:1->2,c:2->2] -> Category of matrices
 #! over GF(3) defined by the following data:
 #! 
 #! 
-#! Image of (1):
+#! Image of <(1)>:
 #! A vector space object over GF(3) of dimension 0
 #! 
-#! Image of (2):
+#! Image of <(2)>:
 #! A vector space object over GF(3) of dimension 3
 #! 
 #! Image of (1)-[{ Z(3)^0*(a) }]->(1):
 #! (an empty 0 x 0 matrix)
+#!
+#! A zero, isomorphism in Category of matrices over GF(3)
 #! 
 #! 
 #! Image of (1)-[{ Z(3)^0*(b) }]->(2):
 #! (an empty 0 x 3 matrix)
 #! 
+#! A zero, split monomorphism in Category of matrices over GF(3)
+#! 
 #! 
 #! Image of (2)-[{ Z(3)^0*(c) }]->(2):
 #!  . 1 .