diff --git a/docs/doc-tex.txt b/docs/doc-tex.txt
index 5ce4387..c910535 100644
--- a/docs/doc-tex.txt
+++ b/docs/doc-tex.txt
@@ -21,6 +21,17 @@ Functions
         Prints the attributes and values if a TextureBatchDescriptor to
         standard output.
 
+    bool getheader(struct TexturePack**, const char*);
+        Retrieves the header for a texture package.
+
+        input:
+            Pointer to a pointer of TexturePack.
+            This is a pass by reference of a pointer to the function.
+            The pointer to TexturePack may be NULL and will be set to point to 
+            a region in the buffer.
+
+            const char*, the buffer containing the whole texture pack file.
+
     bool getbatchdesc(struct TextureBatchDescriptor**, 
                       unsigned int, 
                       const char *,