draw.io is a diagramming tool that is capable of creating very complex diagrams using highly customizable shapes. Of course, you can use the format panel on the right to change the colors, text, alignment and other settings for your shapes and connectors. And it’s even easier to customize your diagram element by changing the shape properties at the bottom of the format panel.
But sometimes, you want complete control over the finest of details.
You can edit the code that represents the shape or connector directly:
- Select a shape or connector.
- Select Edit > Edit Style from the menu.
The dialog that opens will show you the style of the shape and connector in key:value pairs.