diff --git a/TODO b/TODO
index 6ca7726..fb2960d 100644
--- a/TODO
+++ b/TODO
@@ -2,6 +2,8 @@ remove intermediate save for asc/des
 
 bug found in baidu(ubuntu...), bug_chn
 
+precise link dest
+
 option for tounicode-map
 get unicode from charname using fontforge (test with 'Font' croc.pdf)
 also for CID Type 0
@@ -9,13 +11,14 @@ also for CID Type 0
 
 round coordinate and check if it'll be faster
 
-argument auto-completion
 
-use absolute positioning for long whitespace
 add fallback font for ' ', or create glyph for it
 rename single-html -> embed-font/image/css ...
 
+argument auto-completion
+
 ==Future==
+use absolute positioning for long whitespace
 color invert
 detect duplicate base fonts when embedding
 disable selection if we know unicode is wrong
@@ -23,6 +26,5 @@ combine lines (unwarp)
 Printing
 multiple charcode mapped to a same glyph
 check if we can add information to the font, and let browsers show ligatures automatically
-custom html/css dir
 native support for image
 native support for draw
diff --git a/src/HTMLRenderer/text.cc b/src/HTMLRenderer/text.cc
index f01bb26..9728f91 100644
--- a/src/HTMLRenderer/text.cc
+++ b/src/HTMLRenderer/text.cc
@@ -173,7 +173,10 @@ void HTMLRenderer::embed_font(const string & filepath, GfxFont * font, FontInfo
     for(auto iter = suffix.begin(); iter != suffix.end(); ++iter)
         *iter = tolower(*iter);
 
-    info.use_tounicode = (is_truetype_suffix(suffix) || (param->tounicode > 0));
+    /*
+     * if parm->tounicode is 0, try the provided tounicode map first
+     */
+    info.use_tounicode = (is_truetype_suffix(suffix) || (param->tounicode >= 0));
     info.has_space = false;
 
     const char * used_map = nullptr;
diff --git a/src/ffw.c b/src/ffw.c
index 371bee0..678ed78 100644
--- a/src/ffw.c
+++ b/src/ffw.c
@@ -303,3 +303,8 @@ void ffw_set_widths(int * width_list, int mapping_len)
         sc->width = width_list[i];
     }
 }
+
+void ffw_auto_hint(void)
+{
+    FVAutoHint(cur_fv);
+}
diff --git a/src/include/ffw.h b/src/include/ffw.h
index 4dd9248..84c907f 100644
--- a/src/include/ffw.h
+++ b/src/include/ffw.h
@@ -35,6 +35,8 @@ void ffw_metric(double * ascent, double * descent, int * em_size);
 
 void ffw_set_widths(int * width_list, int mapping_len);
 
+void ffw_auto_hint(void);
+
 #ifdef __cplusplus
 }
 }