I wish to achieve a white icon (final result is a white PNG image with transparency).
For example - I want a white rectangle with the text "NOTHING HERE" subtracted from that rectangle (I want the final PNG to have the transparency where the text is).
Doing this is very simple - I create a rectangle, add the text, then subtract the text (possibly after converting it to a path) from the rectangle.
This works, but leaves the text fixed and I can no longer edit it.
The above is a simplified description of what I'm facing. I usually don't work with just text - I need to subtract one shape from another, but I'd like to be able to keep working on the shape used for the subtraction.
I was thinking about using a mask, but I can't seem to figure out how would I use it for this case. That said, editing masks / clips is also made more difficult. Ideally I'd like to use a filter which simply makes anything below the object it's applied to "vanish", but I'm not sure which filter I should use (and how I should configure it).
EDIT: Quick note - I used to work a bit with Corel Draw. If memory serves, Corel can turn an object into a sort of mask-like filter, where it applies whatever effect you select to anything directly under the object. I believe it's called a lens. Said lenses could apply various effects (including color manipulation and more). Doesn't Inkscape have anything similar?