Sets alpha to 1 (full white) for selected 'Read' nodes.

• Select read nodes.
• Tools -> Channel -> Auto Alpha

• Selected 'Read' nodes have their alpha channel set to 1 (full white).

• Copy 'autoAlpha' folder in your .Natron folder.
• Add following lines to your 'initGui.py' file, where <path> is the location of 'autoAlpha' folder.

from <path>.autoAlpha.autoAlpha import *
NatronGui.natron.addMenuCommand('Tools/Channel/Auto Alpha','autoAlpha')