It's clearly stated in Definitions section (for Modify, Modified, or Modification).
It draws clear distinction between merely USING the software in its original form and ADAPTATION or DERIVATION that requires copyright permission.
It plainly, simply and directly implies that using it is fine and distributing modifications is not. It also says that unmodified version is fine to distribute commercially ("... other than making an exact copy").
It draws clear distinction between merely USING the software in its original form and ADAPTATION or DERIVATION that requires copyright permission.
It plainly, simply and directly implies that using it is fine and distributing modifications is not. It also says that unmodified version is fine to distribute commercially ("... other than making an exact copy").