Some translations prefer to set apart quotations. The ULB and many other English translations set lines 1:3-6, 14-17, which are extended quotations, farher to the right on the page than the rest of the text.
This book contains a number of visions given to Zechariah, so the images are not ones Zechariah actually saw but were given to him in a vision or dream. It is important for each of these visions to keep their meanings and not be interpreted to mean any specific thing.
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Zechariah uses two separate dates in this first chapter. When compared to the book of Haggai, Zechariah's prophecy was proclaimed just a few weeks after Haggai. However, they prophesied in two different places: Haggai was in Jerusalem and Zechariah was somewhere outside of Jerusalem. (See: [[rc://en/tw/dict/bible/kt/prophet]])