- ExpressionUUID is managed automatically by the front end and cannot be manually assigned, queried or inherited as a typical notebook front end option.
- All notebooks and cells have an ExpressionUUID option written to the file when the file is saved.
- Functions that read the contents of open notebook windows such as NotebookGet and NotebookRead will not include the value of ExpressionUUID in their results. This helps to ensure that a UUID does not get reused when programmatically modifying notebooks using such commands.
- The UUID designated by ExpressionUUID is the same as the one used in the first argument of NotebookObject and CellObject to uniquely identify a given instance of a cell.
Wolfram Research (2021), ExpressionUUID, Wolfram Language function, https://reference.wolfram.com/language/ref/ExpressionUUID.html (updated 2022).
Wolfram Language. 2021. "ExpressionUUID." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2022. https://reference.wolfram.com/language/ref/ExpressionUUID.html.
Wolfram Language. (2021). ExpressionUUID. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/ExpressionUUID.html