Is there an editor (WYSIWYG) for Widgets (maybe yaml Editor for VUE)?

Hello,

is there an good editor (WYSIWYG) for Widgets (maybe yaml Editor for VUE) ?
Or how is the best way to develop custom Widgets ?

Thank you

Use the widget editor built in MainUI. You see the result in the right pane.

But ther I could not see lines or areas of the different componentsm but I will try it there if this is the way.

Thank you

If I want to check position of rows/columns etc, I set the background color for that component different.