diff --git a/src/helpers/help.cpp b/src/helpers/help.cpp
index 404fd0e..7de95c2 100644
--- a/src/helpers/help.cpp
+++ b/src/helpers/help.cpp
@@ -8,39 +8,63 @@ using namespace std;
 
 namespace help {
 	
+	inline KeyboardFeatures operator|(KeyboardFeatures a, KeyboardFeatures b) {
+		return static_cast<KeyboardFeatures>(static_cast<uint16_t>(a) | static_cast<uint16_t>(b));
+	}
+	
+	KeyboardFeatures getKeyboardFeatures(string cmdName) {
+		if(cmdName == "g213-led") return KeyboardFeatures::g213;
+		else if(cmdName == "g410-led") return KeyboardFeatures::g410;
+		else if(cmdName == "g610-led") return KeyboardFeatures::g610;
+		else if(cmdName == "g810-led") return KeyboardFeatures::g810;
+		else if(cmdName == "g910-led") return KeyboardFeatures::g910;
+		return KeyboardFeatures::all;
+	}
+	
+	
 	void usage(char *arg0) {
 		string cmdName = utils::getCmdName(arg0);
+		KeyboardFeatures features = getKeyboardFeatures(cmdName);
 		cout<<cmdName<<endl;
 		cout<<"--------"<<endl;
 		cout<<"Version : "<<VERSION<<endl;
 		cout<<endl;
 		cout<<"Usage: "<<cmdName<<" [OPTIONS...] [command] (command arguments)"<<endl;
 		cout<<"Commands:"<<endl;
-		cout<<"  -a {color}\t\t\t\tSet all keys color"<<endl;
-		cout<<"  -g {keygroup} {color}\t\t\tSet key group color"<<endl;
-		cout<<"  -k {key} {color}\t\t\tSet key color"<<endl;
-		if (cmdName == "g213-led") {
+		if((features | KeyboardFeatures::setall) == features)
+			cout<<"  -a {color}\t\t\t\tSet all keys color"<<endl;
+		if((features | KeyboardFeatures::setgroup) == features)
+			cout<<"  -g {keygroup} {color}\t\t\tSet key group color"<<endl;
+		if((features | KeyboardFeatures::setkey) == features)
+			cout<<"  -k {key} {color}\t\t\tSet key color"<<endl;
+		if((features | KeyboardFeatures::setregion) == features)
 			cout<<"  -r {region} {color}\t\t\tSet the color of a region for a region-based keyboard"<<endl;
-		}
-		if (cmdName == "g910-led") {
+		if((features | KeyboardFeatures::gkeys) == features) {
 			cout<<"  -mr {value}\t\t\t\tSet MR key (0-1)"<<endl;
 			cout<<"  -mn {value}\t\t\t\tSet MN key (0-7) (M1=1, M2=2, M3=4) (M1+M2=3, M1+M3=5, ...)"<<endl;
 			cout<<endl;
 			cout<<"  -gkm {value}\t\t\t\tSet GKeys mode (0=Mapped to FKeys, 1=Independent)"<<endl;
 		}
 		cout<<endl;
-		cout<<"  -an {color}\t\t\t\tSet all keys color without commit"<<endl;
-		cout<<"  -gn {keygroup} {color}\t\tSet key group color without commit"<<endl;
-		cout<<"  -kn {key} {color}\t\t\tSet key color without commit"<<endl;
-		cout<<"  -c\t\t\t\t\tCommit change"<<endl;
-		cout<<endl;
+		if((features | KeyboardFeatures::commit) == features) {
+			if((features | KeyboardFeatures::setall) == features)
+				cout<<"  -an {color}\t\t\t\tSet all keys color without commit"<<endl;
+			if((features | KeyboardFeatures::setgroup) == features)
+				cout<<"  -gn {keygroup} {color}\t\tSet key group color without commit"<<endl;
+			if((features | KeyboardFeatures::setkey) == features)
+				cout<<"  -kn {key} {color}\t\t\tSet key color without commit"<<endl;
+			cout<<"  -c\t\t\t\t\tCommit change"<<endl;
+			cout<<endl;
+		}
 		cout<<"  -fx ...\t\t\t\tUse --help-effects for more detail"<<endl;
 		cout<<endl;
 		cout<<"  < {profile}\t\t\t\tSet a profile from a file (use --help-samples for more detail)"<<endl;
 		cout<<"  |\t\t\t\t\tSet a profile from stdin (for scripting) (use --help-samples for more detail)"<<endl;
 		cout<<endl;
-		cout<<"  --startup-mode {startup mode}\t\tSet startup mode"<<endl;
-		cout<<endl;
+		if((features | KeyboardFeatures::poweronfx) == features) {
+			cout<<"  --startup-mode {startup mode}\t\tSet startup mode"<<endl;
+			cout<<endl;
+		}
 		cout<<"  --list-keyboards \t\t\tList connected keyboards"<<endl;
 		cout<<"  --print-device\t\t\tPrint device information for the keyboard"<<endl;
 		cout<<endl;
@@ -56,52 +80,59 @@ namespace help {
 		cout<<"  -tuk\t\t\t\t\tTest unsuported keyboard with one of supported protocol (1-3) -dv and -dp are required"<<endl;
 		cout<<endl;
 		cout<<"Values:"<<endl;
-		if (cmdName == "g610-led")
-			cout<<"  color formats :\t\t\tII (hex value for intensity)"<<endl;
-		else
+		if((features | KeyboardFeatures::rgb) == features)
 			cout<<"  color formats :\t\t\tRRGGBB (hex value for red, green and blue)"<<endl;
-		if (cmdName == "g213-led") {
-			cout<<"  region formats :\t\tRN (integer value for region, 1 to 5)"<<endl;
-		}
+		if((features | KeyboardFeatures::intensity) == features)
+			cout<<"  color formats :\t\t\tII (hex value for intensity)"<<endl;
+		if((features | KeyboardFeatures::setregion) == features)
+			cout<<"  region formats :\t\t\tRN (integer value for region, 1 to 5)"<<endl;
 		cout<<"  speed formats :\t\t\tSS (hex value for speed 01 to ff)"<<endl;
 		cout<<endl;
-		cout<<"  key values :\t\t\t\tabc... 123... and other (use --help-keys for more detail)"<<endl;
-		cout<<"  group values :\t\t\tlogo, indicators, fkeys, ... (use --help-keys for more detail)"<<endl;
+		if((features | KeyboardFeatures::setkey) == features)
+			cout<<"  key values :\t\t\t\tabc... 123... and other (use --help-keys for more detail)"<<endl;
+		if((features | KeyboardFeatures::setgroup) == features)
+			cout<<"  group values :\t\t\tlogo, indicators, fkeys, ... (use --help-keys for more detail)"<<endl;
 		cout<<"  startup mode :\t\t\twave, color"<<endl;
 		cout<<endl;
 	}
 	
+	// Need to check rgb and intesity
 	void keys(char *arg0) {
 		string cmdName = utils::getCmdName(arg0);
+		KeyboardFeatures features = getKeyboardFeatures(cmdName);
+		
 		cout<<cmdName<<" Keys"<<endl;
 		cout<<"-------------"<<endl;
 		cout<<endl;
 		cout<<"Group List :"<<endl;
 		
-		if (cmdName != "g410-led") cout<<"    logo"<<endl;
-		if (cmdName != "g410-led") cout<<"    indicators"<<endl;
-		if (cmdName == "g910-led") cout<<"    gkeys"<<endl;
+		if((features | KeyboardFeatures::logo1) == features)
+			cout<<"    logo"<<endl;
+		if((features | KeyboardFeatures::setindicators) == features)
+			cout<<"    indicators"<<endl;
+		if((features | KeyboardFeatures::gkeys) == features)
+			cout<<"    gkeys"<<endl;
 		cout<<"    fkeys"<<endl;
 		cout<<"    modifiers"<<endl;
-		if (cmdName != "g410-led"    && cmdName != "g910-led") cout<<"    multimedia"<<endl;
+		if((features | KeyboardFeatures::multimedia) == features)
+			cout<<"    multimedia"<<endl;
 		cout<<"    arrows"<<endl;
-		if (cmdName != "g410-led") cout<<"    numeric"<<endl;
+		if((features | KeyboardFeatures::numpad) == features)
+			cout<<"    numeric"<<endl;
 		cout<<"    functions"<<endl;
 		cout<<"    keys"<<endl;
 		cout<<endl;
 		cout<<endl;
 		
-		if (cmdName == "g910-led") {
-			cout<<"Group logo :"<<endl;
-			cout<<"    logo"<<endl;
-			cout<<"    logo2"<<endl;
-		} else if (cmdName != "g410-led")  {
-			cout<<"Group logo :"<<endl;
+		if((features | KeyboardFeatures::logo1) == features) {
+			cout<<"Group Logo :"<<endl;
 			cout<<"    logo"<<endl;
+			if((features | KeyboardFeatures::logo2) == features)
+				cout<<"    logo2"<<endl;
+			cout<<""<<endl;
 		}
-		cout<<""<<endl;
 		
-		if (cmdName != "g410-led") {
+		if((features | KeyboardFeatures::setindicators) == features) {
 			cout<<"Group indicators :"<<endl;
 			cout<<"    num_indicator, numindicator, num"<<endl;
 			cout<<"    caps_indicator, capsindicator, caps"<<endl;
@@ -111,7 +142,7 @@ namespace help {
 			cout<<""<<endl;
 		}
 		
-		if (cmdName == "g910-led") {
+		if((features | KeyboardFeatures::gkeys) == features) {
 			cout<<"Group gkeys :"<<endl;
 			cout<<"    g1 - g9"<<endl;
 			cout<<""<<endl;
@@ -133,7 +164,7 @@ namespace help {
 		cout<<"    shift_right, shiftright, shiftr"<<endl;
 		cout<<""<<endl;
 		
-		if (cmdName != "g410-led"    && cmdName != "g910-led") {
+		if((features | KeyboardFeatures::multimedia) == features) {
 			cout<<"Group multimedia :"<<endl;
 			cout<<"    mute"<<endl;
 			cout<<"    play_pause, playpause, play"<<endl;
@@ -150,7 +181,7 @@ namespace help {
 		cout<<"    arrow_right, arrowright, right"<<endl;
 		cout<<""<<endl;
 		
-		if (cmdName != "g410-led") {
+		if((features | KeyboardFeatures::numpad) == features) {
 			cout<<"Group numeric :"<<endl;
 			cout<<"    num_lock, numlock"<<endl;
 			cout<<"    num_slash, numslash, num/"<<endl;
@@ -175,31 +206,35 @@ namespace help {
 		cout<<"    end"<<endl;
 		cout<<"    page_down, pagedown"<<endl;
 		cout<<""<<endl;
-		cout<<"Group keys :"<<endl;
-		cout<<"    0 - 9"<<endl;
-		cout<<"    a - z"<<endl;
-		cout<<"    tab"<<endl;
-		cout<<"    caps_lock, capslock"<<endl;
-		cout<<"    space"<<endl;
-		cout<<"    backspace, back"<<endl;
-		cout<<"    enter"<<endl;
-		cout<<"    tilde"<<endl;
-		cout<<"    minus"<<endl;
-		cout<<"    equal"<<endl;
-		cout<<"    open_bracket"<<endl;
-		cout<<"    close_bracket"<<endl;
-		cout<<"    backslash"<<endl;
-		cout<<"    semicolon"<<endl;
-		cout<<"    dollar"<<endl;
-		cout<<"    quote"<<endl;
-		cout<<"    intl_backslash"<<endl;
-		cout<<"    comma"<<endl;
-		cout<<"    period"<<endl;
-		cout<<"    slash"<<endl;
+		
+		if((features | KeyboardFeatures::setkey) == features) {
+			cout<<"Group keys :"<<endl;
+			cout<<"    0 - 9"<<endl;
+			cout<<"    a - z"<<endl;
+			cout<<"    tab"<<endl;
+			cout<<"    caps_lock, capslock"<<endl;
+			cout<<"    space"<<endl;
+			cout<<"    backspace, back"<<endl;
+			cout<<"    enter"<<endl;
+			cout<<"    tilde"<<endl;
+			cout<<"    minus"<<endl;
+			cout<<"    equal"<<endl;
+			cout<<"    open_bracket"<<endl;
+			cout<<"    close_bracket"<<endl;
+			cout<<"    backslash"<<endl;
+			cout<<"    semicolon"<<endl;
+			cout<<"    dollar"<<endl;
+			cout<<"    quote"<<endl;
+			cout<<"    intl_backslash"<<endl;
+			cout<<"    comma"<<endl;
+			cout<<"    period"<<endl;
+			cout<<"    slash"<<endl;
+		}
 	}
 	
 	void effects(char *arg0) {
 		string cmdName = utils::getCmdName(arg0);
+		KeyboardFeatures features = getKeyboardFeatures(cmdName);
 		cout<<cmdName<<" Effects"<<endl;
 		cout<<"----------------"<<endl;
 		cout<<endl;
@@ -214,62 +249,79 @@ namespace help {
 		cout<<"  -fx vwave {target} {speed}"<<endl;
 		cout<<"  -fx cwave {target} {speed}"<<endl;
 		cout<<endl;
-		if (cmdName == "g410-led") {
-			cout<<"target value :\t\t\t\tall, keys (all is for compatibility with other keyboard models)"<<endl;
-		} else {
+		if((features | KeyboardFeatures::logo1) == features)
 			cout<<"target value :\t\t\t\tall, keys, logo"<<endl;
-		}
-		cout<<"color formats :\t\t\t\tRRGGBB (hex value for red, green and blue)"<<endl;
+		else
+			cout<<"target value :\t\t\t\tall, keys (all is for compatibility with other keyboard models)"<<endl;
+		if((features | KeyboardFeatures::rgb) == features)
+			cout<<"color formats :\t\t\t\tRRGGBB (hex value for red, green and blue)"<<endl;
+		else if((features | KeyboardFeatures::rgb) == features)
+			cout<<"color formats :\t\t\t\tII (hex value for intensity)"<<endl;
 		cout<<"speed formats :\t\t\t\tSS (hex value for speed 01 to ff)"<<endl;
 		cout<<endl;
 	}
 	
+	// Need to check rgb and intesity
 	void samples(char *arg0) {
 		string cmdName = utils::getCmdName(arg0);
+		KeyboardFeatures features = getKeyboardFeatures(cmdName);
 		cout<<cmdName<<" Samples"<<endl;
 		cout<<"----------------"<<endl;
 		cout<<endl;
 		cout<<"Samples :"<<endl;
-		cout<<"g810-led -p /etc/g810/profile          # Load a profile"<<endl;
-		cout<<"g810-led -k logo ff0000                # Set color of a key"<<endl;
-		cout<<"g810-led -a 00ff00                     # Set color of all keys"<<endl;
-		cout<<"g810-led -g fkeys ff00ff               # Set color of a group of keys"<<endl;
-		cout<<"g810-led -s color                      # Set keyboard power on effect"<<endl;
-		cout<<"g810-led -fx color keys 00ff00         # Set fixed color effect"<<endl;
-		cout<<"g810-led -fx breathing logo 00ff00 0a  # Set breathing effect"<<endl;
-		cout<<"g810-led -fx cycle all 0a              # Set color cycle effect"<<endl;
-		cout<<"g810-led -fx hwave keys 0a             # Set horizontal wave effect"<<endl;
-		cout<<"g810-led -fx vwave keys 0a             # Set vertical wave effect"<<endl;
-		cout<<"g810-led -fx cwave keys 0a             # Set center wave effect"<<endl;
-		cout<<endl;
-		cout<<"Samples with no commit :"<<endl;
-		cout<<"g810-led -an 000000            # Set color of all key with no action"<<endl;
-		cout<<"g810-led -gn modifiers ff0000  # Set color of a group with no action"<<endl;
-		cout<<"g810-led -kn w ff0000          # Set color of a key with no action"<<endl;
-		cout<<"g810-led -kn a ff0000          # Set color of a key with no action"<<endl;
-		cout<<"g810-led -kn s ff0000          # Set color of a key with no action"<<endl;
-		cout<<"g810-led -kn d ff0000          # Set color of a key with no action"<<endl;
-		cout<<"g810-led -c                    # Commit all changes"<<endl;
-		cout<<endl;
-		cout<<"Samples for g610 :"<<endl;
-		cout<<"g610-led -a 60        # Set intensity of all keys"<<endl;
-		cout<<"g610-led -k logo ff   # Set intensity of a key"<<endl;
-		cout<<"g610-led -g fkeys aa  # Set intensity of a group of keys"<<endl;
-		cout<<endl;
-		cout<<"Samples for g213 :"<<endl;
-		cout<<"g213-led -a 00ff00    # Set color of all keys"<<endl;
-		cout<<"g213-led -r 1 ff0000  # Set region 1 red"<<endl;
-		cout<<endl;
-		cout<<"Samples with pipe (for effects) :"<<endl;
-		cout<<"g810-led -pp < profilefile # Load a profile"<<endl;
-		cout<<"echo -e \"k w ff0000\\nk a ff0000\\nk s ff0000\\nk d ff0000\\nc\" | g810-led -pp # Set multiple keys"<<endl;
+		cout<<cmdName<<" -p /etc/g810/profile          # Load a profile"<<endl;
+		if((features | KeyboardFeatures::setkey) == features)
+			cout<<cmdName<<" -k logo ff0000                # Set color of a key"<<endl;
+		if((features | KeyboardFeatures::setall) == features)
+			cout<<cmdName<<" -a 00ff00                     # Set color of all keys"<<endl;
+		if((features | KeyboardFeatures::setgroup) == features)
+			cout<<cmdName<<" -g fkeys ff00ff               # Set color of a group of keys"<<endl;
+		if((features | KeyboardFeatures::setregion) == features)
+			cout<<cmdName<<" -r 1 ff0000                   # Set region 1 red"<<endl;
+		cout<<cmdName<<" -fx color keys 00ff00         # Set fixed color effect"<<endl;
+		cout<<cmdName<<" -fx breathing logo 00ff00 0a  # Set breathing effect"<<endl;
+		cout<<cmdName<<" -fx cycle all 0a              # Set color cycle effect"<<endl;
+		cout<<cmdName<<" -fx hwave keys 0a             # Set horizontal wave effect"<<endl;
+		cout<<cmdName<<" -fx vwave keys 0a             # Set vertical wave effect"<<endl;
+		cout<<cmdName<<" -fx cwave keys 0a             # Set center wave effect"<<endl;
+		if((features | KeyboardFeatures::poweronfx) == features)
+			cout<<cmdName<<" --startup-mode color          # Set keyboard power on effect"<<endl;
 		cout<<endl;
+		if((features | KeyboardFeatures::commit) == features) {
+			cout<<"Samples with no commit :"<<endl;
+			if((features | KeyboardFeatures::setall) == features)
+				cout<<cmdName<<" -an 000000            # Set color of all key with no action"<<endl;
+			if((features | KeyboardFeatures::setgroup) == features)
+				cout<<cmdName<<" -gn modifiers ff0000  # Set color of a group with no action"<<endl;
+			if((features | KeyboardFeatures::setkey) == features) {
+				cout<<cmdName<<" -kn w ff0000          # Set color of a key with no action"<<endl;
+				cout<<cmdName<<" -kn a ff0000          # Set color of a key with no action"<<endl;
+				cout<<cmdName<<" -kn s ff0000          # Set color of a key with no action"<<endl;
+				cout<<cmdName<<" -kn d ff0000          # Set color of a key with no action"<<endl;
+			}
+			cout<<cmdName<<" -c                    # Commit all changes"<<endl;
+			cout<<endl;
+		}
+		// Need to be merged with Samples
+		if((features | KeyboardFeatures::intensity) == features) {
+			cout<<"Samples with intensity :"<<endl;
+			cout<<cmdName<<" -a 60        # Set intensity of all keys"<<endl;
+			cout<<cmdName<<" -k logo ff   # Set intensity of a key"<<endl;
+			cout<<cmdName<<" -g fkeys aa  # Set intensity of a group of keys"<<endl;
+			cout<<endl;
+		}
+		if((features | KeyboardFeatures::setkey) == features) {
+			cout<<"Samples with pipe (for effects) :"<<endl;
+			cout<<cmdName<<" -pp < profilefile # Load a profile"<<endl;
+			cout<<"echo -e \"k w ff0000\\nk a ff0000\\nk s ff0000\\nk d ff0000\\nc\" | g810-led -pp # Set multiple keys"<<endl;
+			cout<<endl;
+		}
 		cout<<"Testing an unsuported keyboard :"<<endl;
 		cout<<"lsusb"<<endl;
 		cout<<"#Sample result of lsusb : ID 046d:c331 Logitech, Inc. (dv=046d and dp=c331)"<<endl;
-		cout<<"g810-led -dv 046d -dp c331 -tuk 1 -a 000000"<<endl;
-		cout<<"g810-led -dv 046d -dp c331 -tuk 2 -a 000000"<<endl;
-		cout<<"g810-led -dv 046d -dp c331 -tuk 3 -a 000000"<<endl;
+		cout<<cmdName<<" -dv 046d -dp c331 -tuk 1 -a 000000"<<endl;
+		cout<<cmdName<<" -dv 046d -dp c331 -tuk 2 -a 000000"<<endl;
+		cout<<cmdName<<" -dv 046d -dp c331 -tuk 3 -a 000000"<<endl;
 		cout<<""<<endl;
 	}
 	
diff --git a/src/helpers/help.h b/src/helpers/help.h
index 4d0a904..9fc177c 100644
--- a/src/helpers/help.h
+++ b/src/helpers/help.h
@@ -5,6 +5,38 @@
 
 namespace help {
 	
+	enum class KeyboardFeatures : uint16_t {
+		none = 0,
+		rgb = 1,
+		intensity = 2,
+		commit = 4,
+		logo1 = 8,
+		logo2 = 16,
+		numpad = 32,
+		multimedia = 64,
+		gkeys = 128,
+		setall = 256,
+		setgroup = 512,
+		setkey = 1024,
+		setregion = 2048,
+		setindicators = 4096,
+		poweronfx = 8192,
+		// fx features
+		
+		all = rgb | intensity | commit | logo1 | logo2 | numpad | multimedia | gkeys |
+		      setall | setgroup | setkey | setregion | setindicators | poweronfx,
+		
+		g213 = rgb | logo1 | numpad | multimedia | setall | setregion | setindicators | poweronfx,
+		g410 = rgb | commit | setall | setgroup | setkey | poweronfx,
+		g610 = intensity | commit | logo1 | numpad | multimedia | setall | setgroup | setkey | setindicators | poweronfx,
+		g810 = rgb | commit | logo1 | numpad | multimedia | setall | setgroup | setkey | setindicators | poweronfx,
+		g910 = rgb | commit | logo1 | logo2 | numpad | multimedia | gkeys | setall | setgroup | setkey | setindicators | poweronfx
+		
+	};
+	inline KeyboardFeatures operator|(KeyboardFeatures a, KeyboardFeatures b);
+	
+	KeyboardFeatures getKeyboardFeatures(std::string cmdName);
+	
 	void usage(char *arg0);
 	void keys(char *arg0);
 	void effects(char *arg0);