update

adds all definitions in the .u file, noting replacements in the default patch for the current namespace.

.> update

.> update <patch>

adds all definitions in the .u file, noting replacements in the specified patch.

.>
update <patch> foo bar

addsfoo,bar,and their dependents from the .u file, noting any replacements into the specified patch.

updateworks likeadd,except that if a definition in the file has the same name as an existing definition, the name gets updated to point to the new definition. If the old definition has any dependents,updatewill add those dependents to a refactoring session, specified by an optional patch.