diff --git a/README.md b/README.md
index ec953e0..bee44bb 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,9 @@ Portable emulator of an Apple II+ or //e. Written in Go.
     - Apple //e enhanced with 128Kb of RAM
     - Base64A clone with 48Kb of base RAM and paginated ROM
 - Storage
+    - 16 Sector diskettes in NIB format
     - 16 Sector diskettes in DSK format
+    - 16 Sector diskettes in WOZ 1.0 or 2.0 format (read only)
     - ProDos hard disk
 - Emulated extension cards:
     - DiskII controller
@@ -59,7 +61,7 @@ casa@servidor:~$ ./apple2sdl
 ![DOS 3.3 started](doc/dos33.png)
 
 ### Play games
-Download a DSK file locally or use an URL ([Asimov](https://www.apple.asimov.net/images/) is an excellent source) with the `-disk` parameter:
+Download a DSK or WOZ file or use an URL ([Asimov](https://www.apple.asimov.net/images/) is an excellent source) with the `-disk` parameter:
 ```
 casa@servidor:~$ ./apple2sdl -disk "https://www.apple.asimov.net/images/games/action/karateka/karateka (includes intro).dsk"
 ```
@@ -169,6 +171,8 @@ Only valid on SDL mode
         dump to the console the sofswitches calls
   -vidHDSlot int
     	  slot for the VidHD card, only for //e models. -1 for none (default 2)
+  -woz string
+    	  show WOZ file information
 
 
 ```
diff --git a/apple2main.go b/apple2main.go
index 7c39c32..97c70ad 100644
--- a/apple2main.go
+++ b/apple2main.go
@@ -28,7 +28,7 @@ func MainApple() *Apple2 {
 	wozImage := flag.String(
 		"woz",
 		"",
-		"file to load on the first disk drive")
+		"show WOZ file information")
 	hardDiskImage := flag.String(
 		"hd",
 		"",
@@ -109,7 +109,7 @@ func MainApple() *Apple2 {
 			panic(err)
 		}
 		f.dump()
-		panic("Woz loaded")
+		return nil
 
 	}
 
diff --git a/apple2sdl/main.go b/apple2sdl/main.go
index f3613af..27ff1b1 100644
--- a/apple2sdl/main.go
+++ b/apple2sdl/main.go
@@ -9,7 +9,9 @@ import (
 
 func main() {
 	a := apple2.MainApple()
-	SDLRun(a)
+	if a != nil {
+		SDLRun(a)
+	}
 }
 
 // SDLRun starts the Apple2 emulator on SDL