diff --git a/GRRLIB/GRRLIB/GRRLIB_ttf.c b/GRRLIB/GRRLIB/GRRLIB_ttf.c
index 6a610f0..8efe87a 100644
--- a/GRRLIB/GRRLIB/GRRLIB_ttf.c
+++ b/GRRLIB/GRRLIB/GRRLIB_ttf.c
@@ -52,7 +52,7 @@ void GRRLIB_ExitTTF (void) {
 
 /**
  * Load a TTF from a buffer.
- * @param file_base Buffer with TTF data.
+ * @param file_base Buffer with TTF data. You must not deallocate the memory before calling GRRLIB_FreeTTF.
  * @param file_size Size of the TTF buffer.
  * @return A handle to a given TTF font object.
  * @see GRRLIB_FreeTTF
diff --git a/grrlib.doxygen b/grrlib.doxygen
index 9b69191..3b623cf 100644
--- a/grrlib.doxygen
+++ b/grrlib.doxygen
@@ -1,4 +1,4 @@
-# Doxyfile 1.7.0
+# Doxyfile 1.7.1
 
 # This file describes the settings to be used by the documentation system
 # doxygen (www.doxygen.org) for a project
@@ -1058,6 +1058,14 @@ EXT_LINKS_IN_WINDOW    = NO
 
 FORMULA_FONTSIZE       = 10
 
+# Use the FORMULA_TRANPARENT tag to determine whether or not the images 
+# generated for formulas are transparent PNGs. Transparent PNGs are 
+# not supported properly for IE 6.0, but are supported on all modern browsers. 
+# Note that when changing this option you need to delete any form_*.png files 
+# in the HTML output before the changes have effect.
+
+FORMULA_TRANSPARENT    = YES
+
 # When the SEARCHENGINE tag is enabled doxygen will generate a search box 
 # for the HTML output. The underlying search engine uses javascript 
 # and DHTML and should work on any modern browser. Note that when using