diff --git a/doc/apple2.sgml b/doc/apple2.sgml
index df578981b..e07d716a3 100644
--- a/doc/apple2.sgml
+++ b/doc/apple2.sgml
@@ -316,17 +316,17 @@ you cannot do it, it just means that there's no help.
   <tag><tt/a2.lo.tgi/</tag>
   This driver features a resolution of 40&times;48 with 16 colors.
 	
-	The function <tt/tgi_apple2_mix()/ allows to activate 4 lines of text. The
-	function clears the corresponding area at the bottom of the screen.
+  The function <tt/tgi_apple2_mix()/ allows to activate 4 lines of text. The
+  function clears the corresponding area at the bottom of the screen.
 
   <tag><tt/a2.hi.tgi/</tag>
   This driver features a resolution of 280&times;192 with 8 colors and two
   hires pages. Note that programs using this driver will have to be linked
   with <tt/--start-addr $4000/ to reserve the first hires page or with
   <tt/--start-addr $6000/ to reserve both hires pages.
-  
-	The function <tt/tgi_apple2_mix()/ allows to activate 4 lines of text. The
-	function doesn't clear the corresponding area at the bottom of the screen.
+
+  The function <tt/tgi_apple2_mix()/ allows to activate 4 lines of text. The
+  function doesn't clear the corresponding area at the bottom of the screen.
 
   In memory constrained situations the memory from &dollar;803 to &dollar;1FFF
   can be made available to a program by calling <tt/_heapadd ((void *) 0x0803, 0x17FD);/
diff --git a/doc/apple2enh.sgml b/doc/apple2enh.sgml
index 8cbaf7c43..1b2982bb4 100644
--- a/doc/apple2enh.sgml
+++ b/doc/apple2enh.sgml
@@ -319,21 +319,21 @@ you cannot do it, it just means that there's no help.
   <tag><tt/a2e.lo.tgi/</tag>
   This driver features a resolution of 40&times;48 with 16 colors.
 
-	The function <tt/tgi_apple2_mix()/ allows to activate 4 lines of text. The
-	function clears the corresponding area at the bottom of the screen.
+  The function <tt/tgi_apple2_mix()/ allows to activate 4 lines of text. The
+  function clears the corresponding area at the bottom of the screen.
 
   <tag><tt/a2e.hi.tgi/</tag>
   This driver features a resolution of 280&times;192 with 8 colors and two
   hires pages. Note that programs using this driver will have to be linked
   with <tt/--start-addr $4000/ to reserve the first hires page or with
   <tt/--start-addr $6000/ to reserve both hires pages.
-	
-	Note that the second hires page is only available if the text display is not in
-	80 column mode. This can be asserted by calling <tt/videomode (VIDEOMODE_40COL);/
-	before installing the driver.
-  
-	The function <tt/tgi_apple2_mix()/ allows to activate 4 lines of text. The
-	function doesn't clear the corresponding area at the bottom of the screen.
+
+  Note that the second hires page is only available if the text display is not in
+  80 column mode. This can be asserted by calling <tt/videomode (VIDEOMODE_40COL);/
+  before installing the driver.
+
+  The function <tt/tgi_apple2_mix()/ allows to activate 4 lines of text. The
+  function doesn't clear the corresponding area at the bottom of the screen.
 
   In memory constrained situations the memory from &dollar;803 to &dollar;1FFF
   can be made available to a program by calling <tt/_heapadd ((void *) 0x0803, 0x17FD);/