About mouse down or touch down events

After trying heaps, I found that heaps is a great engine. Thank you for your efforts and efforts, but I tried to capture an event of mouse down or touch down event,

I want to do something when the mouse is pressed or touched.

Which event can help me capture this event? Thank you very much for your efforts and help.

A little bit of code, or hints, is welcome.

It’s in the documentation.

Also you will have answers faster in the discord.