This file is indexed.

/usr/lib/R/site-library/fOptions/INDEX is in r-cran-foptions 3010.83-1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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BasicAmericanOptions    Valuation of Basic American Options
BinomialTreeOptions     Binomial Tree Option Model
HestonNandiGarchFit     Heston-Nandi Garch(1,1) Modelling
HestonNandiOptions      Option Price for the Heston-Nandi Garch Option
                        Model
LowDiscrepancy          Low Discrepancy Sequences
MonteCarloOptions       Monte Carlo Valuation of Options
PlainVanillaOptions     Valuation of Plain Vanilla Options