diff --git a/Doxyfile b/Doxyfile
index ad374f7e..4a4a3ba5 100644
--- a/Doxyfile
+++ b/Doxyfile
@@ -939,20 +939,8 @@ ENUM_VALUES_PER_LINE   = 4
 
 # The GENERATE_TREEVIEW tag is used to specify whether a tree-like index 
 # structure should be generated to display hierarchical information. 
-# If the tag value is set to FRAME, a side panel will be generated 
-# containing a tree-like index structure (just like the one that 
-# is generated for HTML Help). For this to work a browser that supports 
-# JavaScript, DHTML, CSS and frames is required (for instance Mozilla 1.0+, 
-# Netscape 6.0+, Internet explorer 5.0+, or Konqueror). Windows users are 
-# probably better off using the HTML help feature. Other possible values 
-# for this tag are: HIERARCHIES, which will generate the Groups, Directories, 
-# and Class Hierarchy pages using a tree view instead of an ordered list; 
-# ALL, which combines the behavior of FRAME and HIERARCHIES; and NONE, which 
-# disables this behavior completely. For backwards compatibility with previous 
-# releases of Doxygen, the values YES and NO are equivalent to FRAME and NONE 
-# respectively.
 
-GENERATE_TREEVIEW      = FRAME
+GENERATE_TREEVIEW      = YES
 
 # If the treeview is enabled (see GENERATE_TREEVIEW) then this tag can be 
 # used to set the initial width (in pixels) of the frame in which the tree 
diff --git a/const.h b/const.h
index 4cfd3829..01a5df4c 100644
--- a/const.h
+++ b/const.h
@@ -241,8 +241,8 @@ enum CHUNKS_CFG
 /// Identifiers for the 8x8 icons of ::Gfx->Icon_sprite (most are unused now)
 enum ICON_TYPES
 {
-  ICON_FLOPPY_3_5=0, ///< 3½" Floppy disk
-  ICON_FLOPPY_5_25,  ///< 5¼" Floppy disk
+  ICON_FLOPPY_3_5=0, ///< 3.5 Floppy disk
+  ICON_FLOPPY_5_25,  ///< 5.25 Floppy disk
   ICON_HDD,          ///< Hard disk drive
   ICON_CDROM,        ///< CD-ROM
   ICON_NETWORK,      ///< "Network" drive
diff --git a/engine.c b/engine.c
index 63c86154..d97230a5 100644
--- a/engine.c
+++ b/engine.c
@@ -16,7 +16,7 @@
     You should have received a copy of the GNU General Public License
     along with Grafx2; if not, see <http://www.gnu.org/licenses/>
 */
-/// @file Window engine and interface management
+/// @file engine.c: Window engine and interface management
 #include <string.h>
 #include <stdlib.h>
 #include <stdio.h>
diff --git a/filesel.h b/filesel.h
index 0ad4520a..ba2cc4a5 100644
--- a/filesel.h
+++ b/filesel.h
@@ -32,7 +32,7 @@ void Add_element_to_list(T_Fileselector *list, const char * fname, int type);
 ///
 /// Formats a display name for a file, directory, or similar name (drive, volume).
 /// The returned value is a pointer to a single static buffer of 19 characters
-/// including the '\0'.
+/// including the '\\0'.
 char * Format_filename(const char * fname, int type);
 
 void Free_fileselector_list(T_Fileselector *list);
diff --git a/windows.c b/windows.c
index 8f0f311d..7cbb6f02 100644
--- a/windows.c
+++ b/windows.c
@@ -213,7 +213,7 @@ void Set_back_color(byte color)
 ///
 /// Redraw the cell in the menu palette for ::Fore_color.
 /// This function checks bounds, it won't draw anything if Fore_color is not visible.
-/// @param id:Color number to frame
+/// @param id: Color number to frame
 void Frame_menu_color(byte id)
 {
   word start_x,start_y,end_x,end_y;