diff --git a/src/MiniDocs/DataFrame.extension.st b/src/MiniDocs/DataFrame.extension.st
new file mode 100644
index 0000000..75cfb01
--- /dev/null
+++ b/src/MiniDocs/DataFrame.extension.st
@@ -0,0 +1,19 @@
+Extension { #name : #DataFrame }
+
+{ #category : #'*MiniDocs' }
+DataFrame >> viewDataFor: aView [
+	<gtView>
+	| columnedList |
+	self numberOfRows >= 1 ifFalse: [ ^ aView empty ].
+	columnedList := aView columnedList
+		title: 'Data';
+		items: [ self transposed columns ];
+		priority: 40.
+	self columnNames
+		withIndexDo: [:aName :anIndex |
+			columnedList
+				column: aName 
+				text: [:anItem | anItem at: anIndex ]
+		].
+	^ columnedList
+]
diff --git a/src/MiniDocs/String.extension.st b/src/MiniDocs/String.extension.st
index b97431e..1b775c0 100644
--- a/src/MiniDocs/String.extension.st
+++ b/src/MiniDocs/String.extension.st
@@ -20,6 +20,17 @@ String >> asDashedLowercase [
 	^ '-' join: (self substrings collect: [:each | each asLowercase ])
 ]
 
+{ #category : #'*MiniDocs' }
+String >> asInteger [ 
+	"Return the integer present in the receiver, or nil. In case of float, returns the integer part."
+	"'1' asInteger >>> 1"
+	"'-1' asInteger >>> -1"
+	"'10' asInteger >>> 10"
+	"'a' asInteger >>> nil"
+	"'1.234' asInteger >>> 1"
+	^ (self copyWithoutAll: '_') asSignedInteger
+]
+
 { #category : #'*MiniDocs' }
 String >> contentsWithoutYAMLMetadata [
 	| newContents |