Documentation: clarification of fl_width()'s dependence on the current font face/size.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@10320 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

FL/fl_draw.H

@@ -531,11 +531,14 @@ FL_EXPORT int fl_height(int font, int size);
   draw the text at so it looks centered vertically in that box.
 */
 inline int  fl_descent() {return fl_graphics_driver->descent();}
-/** Returns the typographical width of a nul-terminated string */
+/** Returns the typographical width of a nul-terminated string
+    using the current font face and size. */
 FL_EXPORT double fl_width(const char* txt);
-/** Returns the typographical width of a sequence of \p n characters */
+/** Returns the typographical width of a sequence of \p n characters
+    using the current font face and size. */
 inline double fl_width(const char* txt, int n) {return fl_graphics_driver->width(txt, n);}
-/** Returns the typographical width of a single character.
+/** Returns the typographical width of a single character
+    using the current font face and size.
     \note if a valid fl_gc is NOT found then it uses the first window gc,
     or the screen gc if no fltk window is available when called. */
 inline double fl_width(unsigned int c)  {return fl_graphics_driver->width(c);}