I typically use the "subscribe"button" to bookmark a thread...that way...every participant isn't notified and returns to the thread just to see "Bookmark"...It's the very reason the "subscribe" button was implimented...

As far as upsizing...wowI'm not sure unless you could try to increasing the image size and try the different resampling options.

I was thinking you could work on a re-sized copy and record an action,then run that action on the original...but it would probably use the same brush size that was used on the re-sized copy.

I'm not very experienced with actions so maaybe there is a way to edit (resized the brush) in the action states.

Tom

“The fact that no one understands you…Doesn’t make you an artist.”