Normally the direction of polylines makes little difference, but for some purposes it can be important, linetype text is oriented in line with the direction of the line segment, so if the polyline flows from right to left, as opposed to left to right the text will appear upside down. as shown in the figures.
Reversing the vertices in a polyline has historically been around since 2010, but I hear a lot of people today ask about the upside down text and how to fix it. Simply enter the REVERSE command by either typing it, or selecting it from the Home ribbon, and select the polyline you want to reverse.
This command can also be used on a few other entities, namely LINE, SPLINE, and HELIX entities.
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