TreeData

TreeData[tree]
extracts the data in the root of tree.
Examples
open allclose allBasic Examples (2)
Properties & Relations (1)
TreeExtract[tree,0] is equivalent to TreeData[tree]:
Wolfram Research (2021), TreeData, Wolfram Language function, https://reference.wolfram.com/language/ref/TreeData.html (updated 13).
Text
Wolfram Research (2021), TreeData, Wolfram Language function, https://reference.wolfram.com/language/ref/TreeData.html (updated 13).
CMS
Wolfram Language. 2021. "TreeData." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 13. https://reference.wolfram.com/language/ref/TreeData.html.
APA
Wolfram Language. (2021). TreeData. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/TreeData.html