exact: Search for exact string, e.g.\ do not use regular expression matching.
verbose: |
    Show versions for packages that match the search.
    Also shows problems encountered during parsing.  These are mostly
    diagnostic and indicate possible incorrectness in the results.
quiet: Ignored for compatibility with other qapplets.
describe: |
    Describe the USE flag, when no USE-flag given and combined with
    \fB-p\fR, lists all USE-flags with their descriptions (and enabled
    state prefixed with an asterisk when used with \fB-I\fR) per
    package.