Minor documentation changes

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@7311 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

FL/Fl_Device.H

@@ -56,10 +56,13 @@ typedef void (*Fl_Draw_Image_Cb)(void* ,int,int,int,uchar*);
  <br> The preferred FLTK API for drawing operations is the function collection of the 
  \ref fl_drawings and \ref fl_attributes modules. 
  <br> Alternatively, member functions of the Fl_Device class can be called
- using global variable Fl_Device *fl_device that points at all time to the single device 
+ using the global variable Fl_Device *fl_device that points at all time to the single device 
  (an instance of an Fl_Device subclass) that's currently receiving drawing requests:<br>
  <tt>fl_device->rect(x, y, w, h);</tt>
- */
+ <br>Each member function of the Fl_Device class has the same effect and parameter list as the
+ function of the \ref fl_drawings and \ref fl_attributes modules which bears the same name
+ augmented with the fl_ prefix.
+  */
 class Fl_Device {
 protected:
   /** \brief The device type */

FL/Fl_Printer.H

@@ -38,7 +38,7 @@
 /**
  \brief A virtual class for print support with several platform-specific implementations.
  *
- This class has no public constructor: don't instantiate it; use Fl_Printer instead.
+ This class has no public constructor: don't instantiate it; use Fl_Printer or Fl_PSfile_Device instead.
  \see class Fl_Printer for full documentation of member functions.
  */
 class  Fl_Abstract_Printer : public Fl_Device {

src/Fl_Device.cxx

@@ -173,8 +173,6 @@ void Fl_Abstract_Printer::end_job (void) {}
 void Fl_Abstract_Printer::translate(int x, int y) {}
 void Fl_Abstract_Printer::untranslate(void) {}
 
-extern Fl_Device *fl_device;
-
 Fl_Device *Fl_Device::set_current(void)
 {
   Fl_Device *current = fl_device;