All 3 Uses

indicate
in
The Alchemist, by Coelho
(Edited)

Once obstacles were overcome, it returned to its course, sighting on a star that indicated the location of the oasis.
p. 78.1

indicated = showed
Until then, he had considered the omens to be things of this world. ... He had never thought of them in terms of a language used by God to indicate what he should do.
p. 92.6 *

indicate = point out (show by a sign)
And the girl pointed to the south, indicating that it was there the strange man lived.
p. 97.5

indicating = expressing

Definitions:

(1) (indicate)
to show (point out, demonstrate, express, or suggest)

The form, indicator can refer to many different kinds of things including intentional signals (such as a turn indicator), gauges (such as one that indicates pressure), or a measurement (such as an economic or chemical indicator).
(2) (meaning too rare to warrant focus)