which tool you use to draw picture？

[SimplyY]

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[Bogdan-Lyashenko]

Hi @SimplyY , I use https://www.draw.io/. It works pretty nice. It allows you to have integration with google drive, so you can store schemes as docs in your g-drive and open them with draw.io for editing, all updates saved back to your docs 'on fly'. Pretty cool. It also has many export options.