Editorial — three approaches to floated figures

Same article, same three figures, three strategies. Naive: stock HTML <figure> with CSS float: right — browser manages everything, text reflows as each image decodes. Pretext + native <img>: flowColumnWithFloats for text, but dims come from polling each <img>'s naturalWidth — pretext re-flows every time a figure's dims arrive. Pretext + preimage: prepare() batches the dim-fetch, pretext flows once with all dims known. Each panel has its own Run button.