diff --git a/pySim/javacard.py b/pySim/javacard.py
index 46f6ec02..07b0f399 100644
--- a/pySim/javacard.py
+++ b/pySim/javacard.py
@@ -6,14 +6,16 @@ import sys
 import io
 
 def ijc_to_cap(in_file: io.IOBase, out_zip: zipfile.ZipFile, p : str = "foo"):
-    """Convert an ICJ (Interoperable Java Card) file [back] to a CAP file."""
-    TAGS = ["Header", "Directory", "Applet", "Import", "ConstantPool", "Class", "Method", "StaticField", "RefLocation", "Export", "Descriptor", "Debug"]
+    """Convert an ICJ (Interoperable Java Card) file [back] to a CAP file.
+    example usage:
+        with io.open(sys.argv[1],"rb") as f, zipfile.ZipFile(sys.argv[2], "wb") as z:
+        ijc_to_cap(f, z)
+    """
+    TAGS = ["Header", "Directory", "Applet", "Import", "ConstantPool", "Class", "Method", "StaticField", "RefLocation",
+            "Export", "Descriptor", "Debug"]
     b = in_file.read()
     while len(b):
         tag, size = struct.unpack('!BH', b[0:3])
         out_zip.writestr(p+"/javacard/"+TAGS[tag-1]+".cap", b[0:3+size])
         b = b[3+size:]
 
-# example usage:
-# with io.open(sys.argv[1],"rb") as f, zipfile.ZipFile(sys.argv[2], "wb") as z:
-#     ijc_to_cap(f, z)