s/this is,/that is,/

2 files changed, 3 insertions, 3 deletions

diff --git a/docs/CHANGES b/docs/CHANGES
index 85c154223..bc85f9d57 100644
--- a/docs/CHANGES
+++ b/docs/CHANGES
@@ -2424,7 +2424,7 @@ CHANGES BETWEEN 2.3.8 and 2.3.7
       is provided for x86 and ARM.  See FT_CONFIG_OPTION_INLINE_MULFIX
       and FT_CONFIG_OPTION_NO_ASSEMBLER (in ftoption.h) for more.
 
-    - The handling of `tricky' fonts  (this is, fonts which don't work
+    - The handling of `tricky' fonts  (that is, fonts which don't work
       with the  autohinter, needing the font  format's hinting engine)
       has been generalized and changed slightly:
 
@@ -2881,7 +2881,7 @@ CHANGES BETWEEN 2.2 and 2.1.10
 
   II. IMPORTANT CHANGES
 
-    - Version 2.2 no longer exposes its internals, this is, the header
+    - Version 2.2 no longer exposes its internals, that is, the header
       files  located in  the `include/freetype/internal'  directory of
       the source package are not  copied anymore by the `make install'
       command.  Consequently, a number of rogue clients which directly
diff --git a/docs/formats.txt b/docs/formats.txt
index 7a4bae09b..4b2f32eab 100644
--- a/docs/formats.txt
+++ b/docs/formats.txt
@@ -57,7 +57,7 @@ Notes
   (`*') in the table below.
 
   FreeType can  be configured to  support Mac  files (on older  Mac OS
-  versions, a `file' is stored as a data and a resource fork, this is,
+  versions, a `file' is stored as a data and a resource fork, that is,
   within two  separate data chunks).  If  a file can't be  opened as a
   font, FreeType then checks whether it  is a resource fork, trying to
   extract  the contained  font data  from  either a  `POST' or  `sfnt'