This is the original wording of the progresive writing issue #132 before I re-edited that issue in favour of (hopefully) more comprehensive version.
This issue aims to outline/frame how progressive writing could be implemented. The subject of the writing for now shall be the PyramidContents, a holder of lazily-loaded pixel data (images) at decreasing spatial resolutions (pyramids), with a couple of additional metadata such as transforms, axes information, or display settings.
Progressive writing means here that