Functions: 
- Import/Export VSDX, VSDM (Microsoft Visio Format)
- Import only with VSD, VSS (Microsoft Visio old binary Format)
- Import/Export to svg, png, jpeg, multi-pages tiff, pdf image file
- Unlimited Undo/Redo (shortcut key: Cmd-Z / Shift-Cmd-Z) 
- Copy / Paste (shortcut key: Cmd-C / Cmd-V) 
- Duplicate select items (shortcut key: Cmd-D) 
- Group / Ungroup Items (shortcut key: Cmd-G / Shift-Cmd-G) 
- Lock/Unlock items position (shortcut key: Cmd-L / Shift-Cmd-L) 
- Rotate left, rotate right (shortcut key: Cmd-J / Cmd-K) 
- Press Cmd+T to move, resize group of items temporary
- Short cut key CMD+B, CMD+I to change text to Bold or Italic
- User could drag right mouse on a current shape to create a new attached object with line
- Double click on the canvas to create a new text box item
- Allow to switch current select object to another shape type
- Allow to change selected items display order
- Scale size of select items 
- Path boolean operations supported
- Flip select items 
- Shadow supported 
- Snap to Grid 
- Auto Align with another object when resize or move 
- Change display order 
- Print supported (shortcut key: Cmd-P) 
- Customizable color / Font / Size / Line Type 
- Support gradient fill to shapes 
- Support many measure units (feet-inch, pixel, cm, mm, ...) 
- Allow user to select items then save them to Favorites list to reuse later