Some time back, I got a pack of ZZAdgcr Chako Ace water soluble pens.
Maybe you'll remember those really important instructions on one side of
the pen? heh heh Well, I've used them quite often since I got them, and
like them. But last night I discovered that they are not only water soluble, they are also air
soluble, though the lines don't disappear as quickly as Mark-B-Gone ink
does. I rolled the Jardin de Fleurs quilt forward -- and discovered
that the marks I'd put on the quilt Wednesday were mostly gone. I
quickly remarked it where I could see it, at least -- but today they're
gone again. It's all right; I can put them back in as I go along. Who
knows; maybe it'll be better the second time! 😉 Here's the pen -- and those 'instructions'. Look at the pen I've been using (2nd photo): even the ink on the pen is vanishing! 😄