No, I just used Alt. Did not select the eraser icon.
I think I found the problem. I didn’t notice that the brush attributes listed at the top change when you press the Alt key; a different set of numbers! It appears that Flow and Opacity were set to values that didn’t provide enough for the eraser to completely remove the effect. I don’t know where these values came from (is there a default?).
I’m new to PL and this was not intuitive to me. You erase the mask regardless of the values set. Yet if you want to remove the effect entirely, you’d better make sure those values listed above are correct. There’s nothing during the act of erasing that will indicate how much is being taken away.
So to completely erase (100%) the effect in areas of the mask using the Alt key, what should Flow and/or Opacity be set to? Pascal, I read the note from your link but I’m not sure I follow.
Thanks to both of you for your help. I appreciate it.