Fixes #80

worldedit-core/src/main/java/com/sk89q/worldedit/command/SchematicCommands.java

@@ -277,7 +277,8 @@ public class SchematicCommands extends MethodCommands {
         }
     }
 
-    @Command(aliases = {"save"}, usage = "[format] <filename>", desc = "Save a schematic into your clipboard")
+    @Command(
+            aliases = {"save"}, usage = "[format] <filename>", desc = "Save a schematic into your clipboard", help = "The default format for 1.13 is schem")
     @Deprecated
     @CommandPermissions({"worldedit.clipboard.save", "worldedit.schematic.save", "worldedit.schematic.save.other"})
     public void save(final Player player, final LocalSession session, @Optional("schem") final String formatName, String filename, @Switch('g') boolean global) throws CommandException, WorldEditException {

worldedit-core/src/main/java/com/sk89q/worldedit/extent/clipboard/io/BuiltInClipboardFormat.java

@@ -50,7 +50,7 @@ import com.sk89q.jnbt.Tag;
  */
 public enum BuiltInClipboardFormat implements ClipboardFormat{
     /**
-     * The Schematic format used by many software.
+     * The Schematic format used by MCEdit.
      */
     @Deprecated
     MCEDIT_SCHEMATIC("mcedit", "mce", "schematic") {
@@ -68,7 +68,7 @@ public enum BuiltInClipboardFormat implements ClipboardFormat{
 
         @Override
         public ClipboardWriter getWriter(OutputStream outputStream) throws IOException {
-            throw new UnsupportedOperationException("No longer supported.");
+            throw new IOException("This format does not support saving, use `schem` as format");
         }
 
         @Override