+Show the sourcecode of the current page.
+.TP
+.B Ctrl\-Shift\-c
+Toggle caret browsing.
+.TP
+.B Ctrl\-Shift\-i
+Toggle auto-loading of images.
+.TP
+.B Ctrl\-Shift\-s
+Toggle script execution.
+.TP
+.B Ctrl\-Shift\-v
+Toggle the enabling of plugins on that surf instance.
+.SH ENVIRONMENT
+.TP
+.B SURF_USERAGENT
+If this variable is set upon startup, surf will use it as the useragent string
+.TP
+.B http_proxy
+If this variable is set and not empty upon startup, surf will use it as the http proxy