For these cases, the closing tags don't make much sense, and are therefore optional. The latter only works if the filename's extension happens to be the same as the access method for that database. Paths are resolved by the same routine that resolves paths for RPM documents. Whatever relationship they have to the actual file system depends on how RPM is configured. In HForms, TagNames are one of Var , Set , Load , or Save .
Values are the arguments of the first RPM tag in a file.
Like par, values can be Imported or Exported. This one applies only to Export actions. Also applies just to Export actions. The external program can update form variables in the same way by echoing on stdout. It is expected that the handler will know that being called with no arguments means to check what has changed in its par file.