[character(1)]
Either a path to a brew template file (with extension “tmpl”), or a short descriptive name enabling the following heuristic for the file lookup:

1. “batchtools.[template].tmpl” in the path specified by the environment variable “R_BATCHTOOLS_SEARCH_PATH”.

2. “batchtools.[template].tmpl” in the current working directory.

3. “[template].tmpl” in the user config directory (see user_config_dir); on linux this is usually “~/.config/batchtools/[template].tmpl”.

4. “.batchtools.[template].tmpl” in the home directory.

5. “[template].tmpl” in the package installation directory in the subfolder “templates”.