Reference for setEndPoint msdn

The reference for setEndPoint msdn is:

TextRange. setEndPoint (sType, oTextRange)

OTextRange is another TextRange object

SType is a string type with four options
StartToEnd
StartToStart
EndToStart
EndToEnd

"A text range has two endpoints: one at the beginning of the text range and one at the end ."
Text range has two endpoints. One endpoint is at the beginning and the other is at the end.
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