some functionality transform issues

[zongzhenxin]

Hello programmer,I want to add this program to my own program and Add a little functionality to it like rubber brush,what should I do,thanks

[brettz9]

Hi,

You can either:

1. Add an extension that adds the feature you want
2. Directly modify the main editor HTML
3. Control the editor through the embedded API

Please take a look at the README and docs and as needed, the source code. If you have further support questions, please use Stackoverflow or such a Q&A site.