Undo: Return to the previous state
Redo: Return to the next state
Range: selection Select a range object
Handwriting: Freehand drawing free lines
Line: Draw a straight line between two straight lines
Arrow: Draw an arrow between two points
Rectangle: Draw a rectangle surrounded by two points
Ellipse: Draw an ellipse surrounded by two points
Border width: Specify the border width of the figure
Border color: Specify the border color of the figure
Fill color: Specify the color to fill the inside of the figure.
Text: Enter text
Font size: Font size
Font color: Font color
Image upload: Upload and paste an image
Locking an object: Locking an object so that it cannot be selected
Unlock All: Unlock All Objects
Background image setting: Set as a background image and lock the image
Save to PNG: Save the canvas as PNG

Context menu

Copy: Copy the target object
Paste: Paste the target object
Move to the foreground: Move the target object to the foreground
Move to the back: Move the target object to the back
Grouping: Target objects are grouped (cannot be nested)
Ungrouping: Ungrouping the target object
Caputure: Save the target object as an image
Delete: Delete the target object

Short cut key

Ctrl + C: Copy the target object * Since it is via the clipboard, it is possible to paste data on other canvases.
Ctrl + V: Paste the target object
Ctrl + A: Select all objects
Delete: Delete the target object
? ? ? ?: Move the target object
Tab: Move between objects
Shift+Tab: Reverse movement between objects
Ctrl + Wheel: Zoom in / out of the canvas