diff --git a/repository/Grafoscopio/GrafoscopioBrowser.class.st b/repository/Grafoscopio/GrafoscopioBrowser.class.st
index dd5671f..b798fdd 100644
--- a/repository/Grafoscopio/GrafoscopioBrowser.class.st
+++ b/repository/Grafoscopio/GrafoscopioBrowser.class.st
@@ -66,7 +66,8 @@ GrafoscopioBrowser class >> configurePandoc [
 
 { #category : #'as yet unclassified' }
 GrafoscopioBrowser class >> configureSettings [
-	"Stablish several 'global' settings according to to image location and the operative system"
+	"Stablish several 'global' settings according to to image location and the operative system. For the moment we're gonna use hardcoded paths,
+	but in the future this will be a smarter method finding the proper external tool and setting up it."
 	
 	draftsLocation := FileSystem disk workingDirectory / 'Grafoscopio' / 'Drafts'.
 	draftsLocation ensureCreateDirectory.
@@ -79,6 +80,11 @@ GrafoscopioBrowser class >> configureSettings [
 		ifTrue: [ 
 			fossil := (FileSystem disk workingDirectory / 'Platform' / 'Windows' / 'Programs' / 'Fossil' / 'fossil.exe') fullName.
 			pandoc := (FileSystem disk workingDirectory / 'Platform' / 'Windows' / 'Programs' / 'Pandoc' / 'pandoc.exe') fullName].
+	Smalltalk platform name = 'Mac OS'
+		ifTrue: [ 
+			fossil := ((FileLocator desktop) asFileReference / 'fossil') fullName.
+			pandoc := (FileSystem disk / 'usr' / 'local' / 'bin' / 'pandoc') fullName.
+			 ]
 ]
 
 { #category : #'as yet unclassified' }
@@ -312,47 +318,58 @@ GrafoscopioBrowser class >> updateGrafoscopio [
 GrafoscopioBrowser class >> updatePrerrequisites [
 	"Updates the system prerequisites with new versions of itself take from the source code repository"
 
-"Visualization library (which also makes main menu loadable)"
-Gofer it
-	smalltalkhubUser: 'ObjectProfile' project: 'Roassal2';
-	configurationOf: 'Roassal2';
-	loadDevelopment.
+	"Visualization library (which also makes main menu loadable)"
+	Gofer it
+		smalltalkhubUser: 'ObjectProfile' project: 'Roassal2';
+		configurationOf: 'Roassal2';
+		loadDevelopment.
 
-"Open/save files on STON format"
-Gofer new 
-	smalltalkhubUser: 'SvenVanCaekenberghe' project: 'STON';
-	configurationOf: 'Ston';
-	loadBleedingEdge.
+	"Support for the STON format used in file persistance for grafoscopio notebooks"
+	Gofer new 
+		smalltalkhubUser: 'SvenVanCaekenberghe' project: 'STON';
+		configurationOf: 'Ston';
+		loadBleedingEdge.
 
-"Moose and Roassal integration"
-Gofer new
-	smalltalkhubUser: 'Moose' project: 'Glamour';
-	package: 'Glamour-Tools';
-	package: 'Glamour-Roassal2-Presentations';
-	load.
+	"Moose and Roassal integration"
+	Gofer new
+		smalltalkhubUser: 'Moose' project: 'Glamour';
+		package: 'Glamour-Tools';
+		package: 'Glamour-Roassal2-Presentations';
+		load.
 	
-Gofer new
-	smalltalkhubUser: 'Moose' project: 'GToolkit';
-	package: 'GT-InspectorExtensions-CoreRoassal';
-	load.
+	Gofer new
+		smalltalkhubUser: 'Moose' project: 'GToolkit';
+		package: 'GT-InspectorExtensions-CoreRoassal';
+		load.
 
-"Integration with external tools"
-Gofer new 
-    smalltalkhubUser: 'Offray' project: 'Grafoscopio';
-    package: 'Grafoscopio-ExternalTools';
-    load.
+	"Integration with external tools"
+	Gofer new 
+	   smalltalkhubUser: 'Offray' project: 'Grafoscopio';
+ 	   package: 'Grafoscopio-ExternalTools';
+  	  load.
 
-"HTML scrapping"
-Gofer new 
-    smalltalkhubUser: 'PharoExtras' project: 'Soup';
-    configurationOf: 'Soup';
-    loadStable.
+	"HTML scrapping"
+	Gofer new 
+ 	  smalltalkhubUser: 'PharoExtras' project: 'Soup';
+  	  configurationOf: 'Soup';
+   	  loadStable.
 
-"Data visualization"
-Gofer new 
-    smalltalkhubUser: 'Offray' project: 'Dataviz';
-    package: 'Dataviz';
-    load.
+	"Data visualization"
+	Gofer new 
+ 	  smalltalkhubUser: 'Offray' project: 'Dataviz';
+  	  package: 'Dataviz';
+	  load.
+	
+	"Support for Operative System integration"
+	Gofer new
+		squeaksource: 'OSProcess';
+		package: 'OSProcess';
+		load.
+		
+	Gofer new
+		squeaksource: 'CommandShell';
+		package: 'CommandShell-Piping';
+		load.
 
 	self inform: 'La actualización de los prerrequisitos ha terminado'
 ]
@@ -781,7 +798,7 @@ GrafoscopioBrowser >> exportAsHtml [
 					self inform: pandoc].
 			Smalltalk platform name = 'Win32'
 				ifTrue: [ OSProcess command: pandoc, ' ', markdownFileLocation , ' --standalone -o ' , htmlFileLocation ]]
-		ifFalse: [GrafoscopioBrowser configurePandoc ].
+		ifFalse: [GrafoscopioBrowser configureSettings].
 
 	self customKeys.