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Lists all IDs of current XL books.

Component Version macOS Windows Linux Server iOS SDK
XL 13.0 ✅ Yes ✅ Yes ✅ Yes ✅ Yes ✅ Yes
MBS( "XL.List" )




Returns list or error.


Lists all IDs of current XL books.
Returns IDs for all XL books in memory. If this list is growing, you may have forgotten to call XL.Book.Release in your scripts.
Normally after all scripts are done, this list should be empty.


List all object IDs:

Set Variable [$list; Value: MBS( "XL.List" ) ]

See also

Release notes

  • Version 13.0

Blog Entries

This function is free to use.

Created 11st December 2022, last changed 27th August 2023

XL.IsInitialized - XL.LoadBook