Just Extra Drags

An addon for justenoughdrags, and adds support for more mods.
It only have buildin support for BuildCraft Pipes for now, But it allows modpack maker to add custom slots on custom GUIs without the need to write codes.

Custom entries

Format is ContainerClass:SlotClass or ContainerClass:SlotClass:true/false. Try to set the third augment true if the drag isn't working. It makes the slot ignore which items can be put into it.

    S:customEntries <
        net.minecraft.client.gui.inventory.GuiChest:net.minecraft.inventory.Slot:true
     >

Turn on 'debug' option to check out class names of the containers and slots for the config.
Beware not to enable this for slots that actually fits in items, instead of a 'mark'.