# PureRef

The [program](https://www.pureref.com/) option to make intangible to mouse might be to allow for tracing through on another program.&#x20;

Saved as `.pur` files, these canvases are viewable cross platform but as of 2020-07-13, I don't know how it is saved. However, a file created on a Mac can be viewed on Windows with the layout preserved.&#x20;