a series of objects for which an `html` method exists
tab
set to `'all'` to add even the first object to an existing window.
Author
Frank Harrell
Details
`htmlViewx` is similar to `htmlView` except that an external viewer is
launched, and the first object is opened in a new window.
Subsequent objects are opened in a new tab in the last created
window. Set `options(vbrowser='command line to run browser')`
to use a browser other than `Vivaldi`.
Defaults to opening a new window for only the first object, and adding
tabs after that.