Parse keywords in string based on values contained in an xpdb
parse_title(string, xpdb, problem, quiet, extra_key = NULL,
extra_value = NULL, ignore_key = NULL)
A string containing keywords (e.g. `@nobs`) to be parsed (e.g. title, label, etc.) using values stored in the `xpdb$summary`.
An xpose database object.
The $problem number to be used.
Should messages be displayed to the console.
A vector of additional keywords not available in the `xpdb$summary`.
A vector of values matching the order of `extra_key`.
A vector of keywords to be ignored i.e. warnings will not be returned.
The parsed `string`.