Each test may contain keywords defined by the test suite. You can use
keywords to restrict the set of tests you want to run. Keywords can
be associated with different groups of tests within the test suite.
Each test may have Click Insert Keyword to see a list of keywords
available for your test suite (the Insert Keyword button is disabled
if your test suite does not use keywords).
Each test suite provides its own set of of keywords, your test suite
documentation describes how to use these keywords.