WaveWriter Software Automatically Scales Record Size, Resolution, etc.to Single or Double Target Instruments; Microsoft Windows-based User Interface; Support GPIB or RS-232 Instruments. Create Custom Waveforms by Freehand Drawing (or with Autolining Between Selected Points) by Editing Standard Functions. Writing Equations or by DSO Acquisition. Edit Waveforms Graphically by Cut and Paste Methods. Invert, Add, Subtract, Multiply or Divide Whole Waveforms or Portions.