Word of the Day - prologue

prologue

/ˈprəʊlɒɡ/
noun
1 A separate introductory section of a literary, dramatic, or musical work.
1.1 archaic The actor who delivers the prologue in a play.
2 An event or act that leads to another.
2.1 (in professional cycling) a short preliminary time trial held before a race to establish a leader.

Origin
Middle English: from Old French, via Latin from Greek prologos, from pro- ‘before’ + logos ‘saying’.

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The prologue to installing a fence is digging holes so you can put in the post logs.