diff --git a/README.md b/README.md
index 9a8d239..a6564b5 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,8 @@
-# SigContrastFastAviUtl
-Sigmodial contrast Aviutl plugin. IM is not used and only works on Y-channel
+# Sig(De)ContrastFastAviUtl
+Sigmodial contrast and decontrast Aviutl plugin. ImageMagick is not being used.
 
 # Build Tips
-Should be easy to build as there are no external dependency (except VS2015 redist). There is a property sheet in the project that set a macro for AviUtl's path. By default, DEBUG auf will be in the same folder as aviutl.exe, while RELEASE build will be put inside the \plugins folder.
+Should be easy to build as there are no external dependency (except for VS2015 redist). There is a property sheet in the project that set a macro for AviUtl's path. By default, DEBUG auf will be in the same folder as aviutl.exe, while RELEASE build will be put inside the \plugins folder.
 
 # Warning: Dirty Code
 A lot of useless code that doesn't being compiled are left behind; Commented out block left behind; so beware.
@@ -10,8 +10,11 @@ A lot of useless code that doesn't being compiled are left behind; Commented out
 The Class "Histogram" is not being used at this moment.
 
 # Known issues
-* checkbox is not implemented
 * parameter change may not reflect properly if you change the parameters while the plugin is disabled.
-* UI language depends on Windows codepage, but Win10 mess up Chinese and Japanese fonts... not my problem.
-* No multithreading: patch welcome
-* It sucks: patch welcome
+* It sucks: fork your own
+
+# Technical details
+* Dumpped IM library -> reduce memory footprint and overhead
+* Make use of compiler's auto parallelization/vectorization for multithreading
+* Use table lookup to reduce calculation
+* Two plugins in a single AUF