Difference between red and green vertexes on a polygon

[GabrielMesa]

I'm editing some shapefiles (not originally made by me) , specifically changing the vertexes of some polygons and I realize when some of the vertexes look red while the majority look green, any reason as to why some are different coloured?

[DanPatterson · Accepted solution]

The start and end vertex of a single polygon is highlighted in red.  They will share the same coordinate.  

I don't have any shapefiles, but are you getting red highlighted points at other locations?

[GabrielMesa]

No, you are correct  hadn't actually checked but indeed there's only 1 red vertex per polygon, interesting little fact thank you, couldn't find information about it anywhere

[DavidPike]

[GabrielMesa]

Thank you! altough it's kind of a vague statement imo, current could just mean the one you're trying to move but it's not the case