Doxygen documentation. Fixed somes typos and also H4 remanent misplaced tags and comments.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@6258 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

32 files changed, 51 insertions, 79 deletions

diff --git a/FL/Fl.H b/FL/Fl.H
index fe1eea461..cad4ab87a 100644
--- a/FL/Fl.H
+++ b/FL/Fl.H
@@ -485,7 +485,7 @@ public:
     will be marked as <i>text</i>.
   */
   static int dnd(); // platform dependent
-  // These are for back-compatability only:
+  // These are for back-compatibility only:
   /** See Fl_Widget* selection_owner(Fl_Widget*) */
   static Fl_Widget* selection_owner() {return selection_owner_;}
   static void selection_owner(Fl_Widget*);
@@ -593,7 +593,7 @@ public:
   static int box_dh(Fl_Boxtype);
   static int draw_box_active();
 
-  // back compatability:
+  // back compatibility:
   /** for back compatibility. sets the (*fatal)() callback. */
   static void set_abort(void (*f)(const char*,...)) {fatal = f;}
   static void (*atclose)(Fl_Window*,void*);
diff --git a/FL/Fl_Browser.H b/FL/Fl_Browser.H
index 447150a4a..6266a8bd3 100644
--- a/FL/Fl_Browser.H
+++ b/FL/Fl_Browser.H
@@ -219,7 +219,7 @@ public:
 	else Fl_Browser_::display(find_line(n));
   }
 
-  // for back compatability only:
+  // for back compatibility only:
   void replace(int a, const char* b) {text(a, b);}
   void display(int, int=1);
 };
diff --git a/FL/Fl_Browser_.H b/FL/Fl_Browser_.H
index f8ee3ca1c..ad9c55161 100644
--- a/FL/Fl_Browser_.H
+++ b/FL/Fl_Browser_.H
@@ -255,7 +255,7 @@ public:
   /**    Sets or gets the width of any scrollbars that are used.  */
   static int scrollbar_width() {return scrollbar_width_;}
 
-  // for back compatability:
+  // for back compatibility:
   /**    This method moves the vertical scrollbar to the righthand side of the list.  */
   void scrollbar_right() {scrollbar.align(FL_ALIGN_RIGHT);}
   /**    This method moves the vertical scrollbar to the lefthand side of the list.  */
diff --git a/FL/Fl_Button.H b/FL/Fl_Button.H
index bc4a8ca1a..460b851b0 100644
--- a/FL/Fl_Button.H
+++ b/FL/Fl_Button.H
@@ -36,7 +36,7 @@
 #define FL_NORMAL_BUTTON	0
 #define FL_TOGGLE_BUTTON	1
 #define FL_RADIO_BUTTON		(FL_RESERVED_TYPE+2)
-#define FL_HIDDEN_BUTTON	3 // for Forms compatability
+#define FL_HIDDEN_BUTTON	3 // for Forms compatibility
 
 extern FL_EXPORT int fl_old_shortcut(const char*);
 
@@ -65,7 +65,7 @@ public:
   Fl_Boxtype down_box() const {return (Fl_Boxtype)down_box_;}
   void down_box(Fl_Boxtype b) {down_box_ = b;}
 
-  // back compatability:
+  // back compatibility:
   void shortcut(const char *s) {shortcut(fl_old_shortcut(s));}
   Fl_Color down_color() const {return selection_color();}
   void down_color(unsigned c) {selection_color(c);}
diff --git a/FL/Fl_Free.H b/FL/Fl_Free.H
index 5b141cc86..4d8147aca 100644
--- a/FL/Fl_Free.H
+++ b/FL/Fl_Free.H
@@ -72,7 +72,7 @@ public:
   ~Fl_Free();
 };
 
-// old event names for compatability:
+// old event names for compatibility:
 #define FL_MOUSE		FL_DRAG
 #define FL_DRAW			100		// NOT USED
 #define FL_STEP			101
diff --git a/FL/Fl_Gl_Window.H b/FL/Fl_Gl_Window.H
index cbe793baf..ce081973c 100644
--- a/FL/Fl_Gl_Window.H
+++ b/FL/Fl_Gl_Window.H
@@ -160,7 +160,6 @@ public:
   Fl_Mode mode() const {return (Fl_Mode)mode_;}
   int mode(int a) {return mode(a,0);}
   int mode(const int *a) {return mode(0, a);}
-
   void* context() const {return context_;}
   void context(void*, int destroy_flag = 0);
   void make_current();
diff --git a/FL/Fl_Group.H b/FL/Fl_Group.H
index 8356d7a8e..2e4b8d7a8 100644
--- a/FL/Fl_Group.H
+++ b/FL/Fl_Group.H
@@ -159,7 +159,7 @@ public:
   void add_resizable(Fl_Widget& o) {resizable_ = &o; add(o);}
   void init_sizes();
 
-  // back compatability function:
+  // back compatibility function:
   void focus(Fl_Widget* o) {o->take_focus();}
   Fl_Widget* & _ddfdesign_kludge() {return resizable_;}
   void forms_end();
diff --git a/FL/Fl_Menu.H b/FL/Fl_Menu.H
index a08306f6a..417ec0749 100644
--- a/FL/Fl_Menu.H
+++ b/FL/Fl_Menu.H
@@ -25,7 +25,7 @@
 //     http://www.fltk.org/str.php
 //
 
-// this include file is for back compatability only
+// this include file is for back compatibility only
 #include "Fl_Menu_Item.H"
 
 //
diff --git a/FL/Fl_Menu_.H b/FL/Fl_Menu_.H
index 583f44440..41e9a492d 100644
--- a/FL/Fl_Menu_.H
+++ b/FL/Fl_Menu_.H
@@ -124,41 +124,15 @@ public:
     This box type is used to surround the currently-selected items in the
     menus.  If this is FL_NO_BOX then it acts like 
     FL_THIN_UP_BOX and selection_color() acts like 
-    FL_WHITE, for back compatability.
-    
-    
-    <h4>const Fl_Menu_Item *Fl_Menu_::find_item(const char *name);</h4>
-    
-    <p>Returns a pointer to the menu item with the given (full)
-    pathname. If no matching menu item can be found, a NULL pointer
-    is returned. This function does not search submenus that are linked
-    via FL_SUBMENU_POINTER.</p>
-    
-    
-    <h4>int Fl_Menu_::item_pathname(char *name, int namelen ) const;<br>
-    int Fl_Menu_::item_pathname(char *name, int namelen, const Fl_Menu_Item *finditem) const;</h4>
-    
-    <p>Returns the 'menu pathname' (eg. "File/Quit") for the recently picked item in user supplied string 'name'. Useful in the callback function for a menu item, to determine the last picked item's 'menu pathname' string.
-    
-    <p>If finditem is specified, name will contain the 'menu pathname' for that item.
-    
-    <p>Returns:
-    
-    <ul>
-    	<li>0 - OK: 'name' has the pathname, guaranteed not longer than namelen
-    	<li>-1 - Failed: 'finditem' was not found in the menu
-    	<li>-2 - Failed: 'name' is not large enough to handle the menu names
-    </ul>
-    
-    <p>In the case of errors (-1 or -2), 'name' will be an empty string.
+    FL_WHITE, for back compatibility.    
   */
   Fl_Boxtype down_box() const {return (Fl_Boxtype)down_box_;}
   /**    See Fl_Boxtype Fl_Menu_::down_box() const   */
   void down_box(Fl_Boxtype b) {down_box_ = b;}
 
-  /** For back compatability, same as selection_color() */
+  /** For back compatibility, same as selection_color() */
   Fl_Color down_color() const {return selection_color();}
-  /** For back compatability, same as selection_color() */
+  /** For back compatibility, same as selection_color() */
   void down_color(unsigned c) {selection_color(c);}
 };
 
diff --git a/FL/Fl_Menu_Item.H b/FL/Fl_Menu_Item.H
index 6e4908951..57331caba 100644
--- a/FL/Fl_Menu_Item.H
+++ b/FL/Fl_Menu_Item.H
@@ -199,7 +199,7 @@ struct FL_EXPORT Fl_Menu_Item {
 
   /**
      Each item has space for a callback function and an argument for that
-     function.  Due to back compatability, the Fl_Menu_Item itself
+     function.  Due to back compatibility, the Fl_Menu_Item itself
      is not passed to the callback, instead you have to get it by calling 
      ((Fl_Menu_*)w)-&gt;mvalue() where w is the widget argument.
   */
@@ -350,7 +350,7 @@ struct FL_EXPORT Fl_Menu_Item {
   */
   void do_callback(Fl_Widget* o,long arg) const {callback_(o, (void*)arg);}
 
-  // back-compatability, do not use:
+  // back-compatibility, do not use:
   /** back compatibility only \deprecated. */
   int checked() const {return flags&FL_MENU_VALUE;}
   /** back compatibility only \deprecated. */
@@ -365,9 +365,9 @@ struct FL_EXPORT Fl_Menu_Item {
   int size() const ;
 };
 
-typedef Fl_Menu_Item Fl_Menu; // back compatability
+typedef Fl_Menu_Item Fl_Menu; // back compatibility
 
-enum {	// back-compatability enum:
+enum {	// back-compatibility enum:
   FL_PUP_NONE	= 0,
   FL_PUP_GREY	= FL_MENU_INACTIVE,
   FL_PUP_GRAY	= FL_MENU_INACTIVE,
diff --git a/FL/Fl_Object.H b/FL/Fl_Object.H
index 616c53441..d741f61e1 100644
--- a/FL/Fl_Object.H
+++ b/FL/Fl_Object.H
@@ -25,7 +25,7 @@
 //     http://www.fltk.org/str.php
 //
 
-// This file is provided for back compatability only.  Please use Fl_Widget
+// This file is provided for back compatibility only.  Please use Fl_Widget
 #ifndef Fl_Object
 #define Fl_Object Fl_Widget
 #endif
diff --git a/FL/Fl_Toggle_Light_Button.H b/FL/Fl_Toggle_Light_Button.H
index ea99678d2..98edbf98d 100644
--- a/FL/Fl_Toggle_Light_Button.H
+++ b/FL/Fl_Toggle_Light_Button.H
@@ -25,7 +25,7 @@
 //     http://www.fltk.org/str.php
 //
 
-// provided for back-compatability only
+// provided for back-compatibility only
 
 #ifndef Fl_Toggle_Light_Button
 #include "Fl_Light_Button.H"
diff --git a/FL/Fl_Toggle_Round_Button.H b/FL/Fl_Toggle_Round_Button.H
index ccd9ae00b..9c9a0c3ec 100644
--- a/FL/Fl_Toggle_Round_Button.H
+++ b/FL/Fl_Toggle_Round_Button.H
@@ -25,7 +25,7 @@
 //     http://www.fltk.org/str.php
 //
 
-// provided for back-compatability only
+// provided for back-compatibility only
 
 #ifndef Fl_Toggle_Round_Button
 #include "Fl_Round_Button.H"
diff --git a/FL/Fl_Window.H b/FL/Fl_Window.H
index 53ecac5f6..f0c19e413 100644
--- a/FL/Fl_Window.H
+++ b/FL/Fl_Window.H
@@ -362,7 +362,7 @@ public:
   */
   void make_current();
 
-  // for back-compatability only:
+  // for back-compatibility only:
   /**
     Changes the cursor for this window.  This always calls the system, if
     you are changing the cursor a lot you may want to keep track of how
diff --git a/FL/fl_draw.H b/FL/fl_draw.H
index 1ebaf2ce9..036a35cea 100644
--- a/FL/fl_draw.H
+++ b/FL/fl_draw.H
@@ -38,7 +38,7 @@ FL_EXPORT extern char fl_draw_shortcut;
 
 // Colors:
 FL_EXPORT void	fl_color(Fl_Color); // select indexed color
-inline void fl_color(int c) {fl_color((Fl_Color)c);} // for back compatability
+inline void fl_color(int c) {fl_color((Fl_Color)c);} // for back compatibility
 FL_EXPORT void	fl_color(uchar, uchar, uchar); // select actual color
 extern FL_EXPORT Fl_Color fl_color_;
 inline Fl_Color fl_color() {return fl_color_;}
diff --git a/fluid/Fl_Widget_Type.cxx b/fluid/Fl_Widget_Type.cxx
index 9ea39fcfe..d991740a5 100644
--- a/fluid/Fl_Widget_Type.cxx
+++ b/fluid/Fl_Widget_Type.cxx
@@ -2482,7 +2482,7 @@ void Fl_Widget_Type::read_property(const char *c) {
     ((Fl_Button*)o)->value(atoi(value));
   } else if (!strcmp(c,"color")) {
     int n = sscanf(read_word(),"%d %d",&x,&y);
-    if (n == 2) { // back compatability...
+    if (n == 2) { // back compatibility...
       if (x != 47) o->color(x);
       o->selection_color(y);
     } else {
diff --git a/fluid/file.cxx b/fluid/file.cxx
index f8bff43b2..8009d91af 100644
--- a/fluid/file.cxx
+++ b/fluid/file.cxx
@@ -393,7 +393,7 @@ static void read_children(Fl_Type *p, int paste) {
       continue;
     }
 
-    // back compatability with Vincent Penne's original class code:
+    // back compatibility with Vincent Penne's original class code:
     if (!p && !strcmp(c,"define_in_struct")) {
       Fl_Type *t = Fl_Type_make("class");
       t->name(read_word());
diff --git a/src/Fl.cxx b/src/Fl.cxx
index 5d2f30e54..92183b54b 100644
--- a/src/Fl.cxx
+++ b/src/Fl.cxx
@@ -1327,7 +1327,7 @@ int Fl_Window::handle(int ev)
 }
 
 ////////////////////////////////////////////////////////////////
-// Back compatability cut & paste functions for fltk 1.1 only:
+// Back compatibility cut & paste functions for fltk 1.1 only:
 
 /**
     The single-argument selection_owner(x) call can be used to
diff --git a/src/Fl_Browser_.cxx b/src/Fl_Browser_.cxx
index 2bc6ce99f..d25655e25 100644
--- a/src/Fl_Browser_.cxx
+++ b/src/Fl_Browser_.cxx
@@ -889,7 +889,7 @@ Fl_Browser_::Fl_Browser_(int X, int Y, int W, int H, const char* l)
   selection_ = 0;
   color(FL_BACKGROUND2_COLOR, FL_SELECTION_COLOR);
   scrollbar.callback(scrollbar_callback);
-//scrollbar.align(FL_ALIGN_LEFT|FL_ALIGN_BOTTOM); // back compatability?
+//scrollbar.align(FL_ALIGN_LEFT|FL_ALIGN_BOTTOM); // back compatibility?
   hscrollbar.callback(hscrollbar_callback);
   hscrollbar.type(FL_HORIZONTAL);
   textfont_ = FL_HELVETICA;
diff --git a/src/Fl_Check_Button.cxx b/src/Fl_Check_Button.cxx
index 54fb02850..addd33d38 100644
--- a/src/Fl_Check_Button.cxx
+++ b/src/Fl_Check_Button.cxx
@@ -30,7 +30,7 @@
 
 // A subclass of Fl_Button that always draws as a diamond box.  This
 // diamond is smaller than the widget size and can be surchecked by
-// another box type, for compatability with Forms.
+// another box type, for compatibility with Forms.
 
 Fl_Check_Button::Fl_Check_Button(int X, int Y, int W, int H, const char *l)
 : Fl_Light_Button(X, Y, W, H, l) {
diff --git a/src/Fl_Gl_Window.cxx b/src/Fl_Gl_Window.cxx
index 8d1a587be..5be36893c 100644
--- a/src/Fl_Gl_Window.cxx
+++ b/src/Fl_Gl_Window.cxx
@@ -79,18 +79,6 @@ static char SWAP_TYPE = 0 ; // 0 = determine it from environment variable
   Returns non-zero if the hardware supports the given or current OpenGL
   mode.
   
-  <h4>void* Fl_Gl_Window::context() const;
-  <br>void Fl_Gl_Window::context(void*, int destroy_flag = false);</h4>
-  
-  Return or set a pointer to the GLContext that this window is
-  using. This is a system-dependent structure, but it is portable to copy
-  the context from one window to another. You can also set it to NULL,
-  which will force FLTK to recreate the context the next time make_current() is called, this is
-  useful for getting around bugs in OpenGL implementations.
-  
-  <p>If <i>destroy_flag</i> is true the context will be destroyed by
-  fltk when the window is destroyed, or when the mode() is changed, or the next time
-  context(x) is called.
 */
 int Fl_Gl_Window::can_do(int a, const int *b) {
   return Fl_Gl_Choice::find(a,b) != 0;
@@ -444,6 +432,17 @@ void Fl_Gl_Window::resize(int X,int Y,int W,int H) {
   Fl_Window::resize(X,Y,W,H);
 }
 
+/**
+  Returns or sets a pointer to the GLContext that this window is
+  using. This is a system-dependent structure, but it is portable to copy
+  the context from one window to another. You can also set it to NULL,
+  which will force FLTK to recreate the context the next time make_current() is called, this is
+  useful for getting around bugs in OpenGL implementations.
+  
+  <p>If <i>destroy_flag</i> is true the context will be destroyed by
+  fltk when the window is destroyed, or when the mode() is changed, or the next time
+  context(x) is called.
+*/
 void Fl_Gl_Window::context(void* v, int destroy_flag) {
   if (context_ && !(mode_&NON_LOCAL_CONTEXT)) fl_delete_gl_context(context_);
   context_ = (GLContext)v;
diff --git a/src/Fl_Group.cxx b/src/Fl_Group.cxx
index 4879e5c2f..7fc0d4e88 100644
--- a/src/Fl_Group.cxx
+++ b/src/Fl_Group.cxx
@@ -87,7 +87,7 @@ void Fl_Group::current(Fl_Group *g) {current_ = g;}
 
 extern Fl_Widget* fl_oldfocus; // set by Fl::focus
 
-// For back-compatability, we must adjust all events sent to child
+// For back-compatibility, we must adjust all events sent to child
 // windows so they are relative to that window.
 
 static int send(Fl_Widget* o, int event) {
diff --git a/src/Fl_Menu.cxx b/src/Fl_Menu.cxx
index a7af493df..15fcee9aa 100644
--- a/src/Fl_Menu.cxx
+++ b/src/Fl_Menu.cxx
@@ -160,7 +160,7 @@ void Fl_Menu_Item::draw(int x, int y, int w, int h, const Fl_Menu_* m,
   if (selected) {
     Fl_Color r = m ? m->selection_color() : FL_SELECTION_COLOR;
     Fl_Boxtype b = m && m->down_box() ? m->down_box() : FL_FLAT_BOX;
-    if (fl_contrast(r,color)!=r) { // back compatability boxtypes
+    if (fl_contrast(r,color)!=r) { // back compatibility boxtypes
       if (selected == 2) { // menu title
 	r = color;
 	b = m ? m->box() : FL_UP_BOX;
diff --git a/src/Fl_Menu_Button.cxx b/src/Fl_Menu_Button.cxx
index 5474cbaaf..7d7402e4c 100644
--- a/src/Fl_Menu_Button.cxx
+++ b/src/Fl_Menu_Button.cxx
@@ -37,7 +37,7 @@ void Fl_Menu_Button::draw() {
   draw_box(pressed_menu_button_ == this ? fl_down(box()) : box(), color());
   draw_label();
   if (Fl::focus() == this) draw_focus();
-  if (box() == FL_FLAT_BOX) return; // for XForms compatability
+  if (box() == FL_FLAT_BOX) return; // for XForms compatibility
   int H = (labelsize()-3)&-2;
   int X = x()+w()-H*2;
   int Y = y()+(h()-H)/2;
diff --git a/src/Fl_Round_Button.cxx b/src/Fl_Round_Button.cxx
index d86611e0c..31168867f 100644
--- a/src/Fl_Round_Button.cxx
+++ b/src/Fl_Round_Button.cxx
@@ -27,7 +27,7 @@
 
 // A subclass of Fl_Button that always draws as a round circle.  This
 // circle is smaller than the widget size and can be surrounded by
-// another box type, for compatability with Forms.
+// another box type, for compatibility with Forms.
 
 #include <FL/Fl.H>
 #include <FL/Fl_Round_Button.H>
diff --git a/src/Fl_Widget.cxx b/src/Fl_Widget.cxx
index f96051a0e..3ebd25b86 100644
--- a/src/Fl_Widget.cxx
+++ b/src/Fl_Widget.cxx
@@ -35,9 +35,9 @@
 
 
 ////////////////////////////////////////////////////////////////
-// for compatability with Forms, all widgets without callbacks are
+// for compatibility with Forms, all widgets without callbacks are
 // inserted into a "queue" when they are activated, and the forms
-// compatability interaction functions (fl_do_events, etc) will
+// compatibility interaction functions (fl_do_events, etc) will
 // read one widget at a time from this queue and return it:
 
 const int QUEUE_SIZE = 20;
@@ -47,7 +47,7 @@ static int obj_head, obj_tail;
 
 void Fl_Widget::default_callback(Fl_Widget *o, void * /*v*/) {
 #if 0
-  // This is necessary for strict forms compatability but is confusing.
+  // This is necessary for strict forms compatibility but is confusing.
   // Use the parent's callback if this widget does not have one.
   for (Fl_Widget *p = o->parent(); p; p = p->parent())
     if (p->callback() != default_callback) {
diff --git a/src/Fl_Window.cxx b/src/Fl_Window.cxx
index c4a7ca8ce..c08b5bc5b 100644
--- a/src/Fl_Window.cxx
+++ b/src/Fl_Window.cxx
@@ -156,7 +156,7 @@ void Fl_Window::iconlabel(const char *iname) {
   set_flag(saveflags);
 }
 
-// the Fl::atclose pointer is provided for back compatability.  You
+// the Fl::atclose pointer is provided for back compatibility.  You
 // can now just change the callback for the window instead.
 
 /** Default callback for window widgets. It hides the window and then calls the default widget callback. */
diff --git a/src/Fl_x.cxx b/src/Fl_x.cxx
index c13ec9958..05f225e91 100644
--- a/src/Fl_x.cxx
+++ b/src/Fl_x.cxx
@@ -1166,7 +1166,7 @@ int fl_handle(const XEvent& thisevent)
       Fl::e_length = len;
     } else {
       // Stupid X sends fake key-up events when a repeating key is held
-      // down, probably due to some back compatability problem. Fortunately
+      // down, probably due to some back compatibility problem. Fortunately
       // we can detect this because the repeating KeyPress event is in
       // the queue, get it and execute it instead:
       XEvent temp;
diff --git a/src/fl_symbols.cxx b/src/fl_symbols.cxx
index e25fea615..f39a9093c 100644
--- a/src/fl_symbols.cxx
+++ b/src/fl_symbols.cxx
@@ -94,7 +94,7 @@ int fl_add_symbol(const char *name, void (*drawit)(Fl_Color), int scalable)
 
 int fl_return_arrow(int x,int y,int w,int h);
 
-// provided for back compatability:
+// provided for back compatibility:
 int fl_draw_symbol(const char *label,int x,int y,int w,int h,Fl_Color col) {  
   const char *p = label;
   if (*p++ != '@') return 0;
diff --git a/src/fl_utf.c b/src/fl_utf.c
index 33b7a2cfc..c3e80f7f2 100644
--- a/src/fl_utf.c
+++ b/src/fl_utf.c
@@ -612,7 +612,7 @@ unsigned fl_utf8froma(char* dst, unsigned dstlen,
     to a string containing the letters "utf" or "UTF" in it, or by
     deleting all $LC* and $LANG environment variables. In the future
     it is likely that all non-Asian Unix systems will return true,
-    due to the compatability of UTF-8 with ISO-8859-1.
+    due to the compatibility of UTF-8 with ISO-8859-1.
 */
 int fl_utf8locale(void) {
   static int ret = 2;
diff --git a/src/forms_compatability.cxx b/src/forms_compatability.cxx
index 0fe44bacd..e8cba24da 100644
--- a/src/forms_compatability.cxx
+++ b/src/forms_compatability.cxx
@@ -25,7 +25,7 @@
 //     http://www.fltk.org/str.php
 //
 
-// Forms library compatability functions.
+// Forms library compatibility functions.
 // Many more functions are defined as inlines in forms.h!
 
 #include <FL/forms.H>
@@ -140,7 +140,7 @@ void fl_set_graphics_mode(int /*r*/,int /*d*/) {}
 
 void Fl_FormsText::draw() {
   draw_box();
-  align(align()|FL_ALIGN_INSIDE); // questionable method of compatability
+  align(align()|FL_ALIGN_INSIDE); // questionable method of compatibility
   draw_label();
 }
 
diff --git a/src/forms_free.cxx b/src/forms_free.cxx
index 918086d79..ec5346299 100644
--- a/src/forms_free.cxx
+++ b/src/forms_free.cxx
@@ -59,7 +59,7 @@ void Fl_Free::step(void *v) {
     The event argument contains the event type:
     <UL>
     <PRE>
-    // old event names for compatability:
+    // old event names for compatibility:
     #define FL_MOUSE		FL_DRAG
     #define FL_DRAW			0
     #define FL_STEP			9