small addition to dwm.1

dwm.1

@@ -17,13 +17,13 @@ resized and moved freely. Dialog windows are always managed floating,
 regardless of the mode selected.
 .P
 Windows are grouped by tags. Each window can be tagged with one or multiple
-tags. Selecting a certain tag for viewing will display all windows with that
-tag.
+tags. Selecting certain tags for viewing will display all windows with that tag.
 .P
 .B dwm
 contains a small status bar which displays all available tags, the mode, the
-title of the focused window, and the text read from standard input. The tags of
-the focused window are highlighted with a small point.
+title of the focused window, and the text read from standard input. The
+selected tags are highlighted with a different color, the tags of the focused
+window are highlighted with a small point.
 .P
 .B dwm
 draws a 1-pixel border around windows to indicate the focus state.