proxy=The rest of the file syncs. Only these values are lifted out and kept in your secret store.
Nothing. Axel writes no caches or state in your home directory.
proxy=Lifted into your secret store; the rest of the file syncs.
Only what the catalog names. A directory that syncs brings everything inside it except what is listed as excluded here.
Opens otty://sync/add/axel. Otty ships with this catalog, so the link only has to name the tool — nothing is downloaded.
Every one of these is generated from the same rules as this page.