How do I change the default dashboard window size?

[#1]

I created a dashboard for one of my data tables, but it always opens in a tiny window. It is not really a problem, just annoying to have to resize it every time, but I would like to change the default window size to be bigger. 

[#2]

Here's one way to change the default size:

1. Run the dashboard like normal
2. Edit it (Red Triangle...Edit Dashboard)
3. Red Triangle...Preview Mode
4. Change the size to what you want
5. Click the Close Preview button
6. Save the dashboard as you normally would. It will now open each time at the size you wanted from step 4.