add zoom in out to qpdfview

source/2/2.2/2.2.6/qpdfview.rst

@@ -28,7 +28,7 @@ To search through your pdf file you can press :kbd:`control + f` or from the men
 
 To make qpdfview fullscreen you can press :kbd:`f11`. To enter presentation mode you can press :kbd:`f12` wihch is makes the content of the pdf take up the fullscreen and gives you no menubars. To exit presentation mode you can press :kbd:`f12` again. To advance to the next page in the presentation press the spacebar or the right arrow. To go back a page in presentation press the left arrow. 
 
-To sleect page width in zoom in qpdfview is a drop down menu with page width to show the width of the page on qpdfview. To view the whole page on qpdfview in this drop down menu select whole page. To return to the original zoom press :kbd:`Control + 0` or :menuselection:`View --> Original size`.   To rotate the file to the left is press :kbd:`Control + Left` or :menuselection:`View --> Rotate Left`. To rotate the file to the right is press :kbd:`Control + Rights` or :menuselection:`View --> Rotate Right`. 
+To sleect page width in zoom in qpdfview is a drop down menu with page width to show the width of the page on qpdfview. To view the whole page on qpdfview in this drop down menu select whole page. To return to the original zoom press :kbd:`Control + 0` or :menuselection:`View --> Original size`. To zoom in is press the magnifying glass with a + in it or press :kbd:`Control + +` or :menuselection:`View --> Zoom in`. To zoom out press the magnifying glass button with a - in it or press :kbd:`Control + -` or menuselection:`View --> Zoom out`. To rotate the file to the left is press :kbd:`Control + Left` or :menuselection:`View --> Rotate Left`. To rotate the file to the right is press :kbd:`Control + Rights` or :menuselection:`View --> Rotate Right`. 
 
 If you have a particularly long pdf file you might want to make a bookmark to find a specific thing easily. To create a bookmark press :kbd:`control +b` or  :menuselection:`Bookmarks -->  Add Bookmark` and give the bookmark a memorable title and description so you can find it in this document again easily. If you later want to remove the bookmark go :menuselection:`bookmarks --> remove bookmark` or press :kbd:`control+ shift+ B`.