No matter what I do, I can not delete a sheet. I have 16 tabs. I have cut and pasted the sheet I want to delete and added it to another already existing sheet. I and am attempting to delete a sheet. I also can not delete or change the name of that file.
Sheet would be the complete file? With all 16 tabs. You delete a complete sheet usually with the option of the operating system (Explorer in Windows, Finder for Mac etc ), as it is a bit difficult to delete the file you have opened. Typical is selecting the file, then use the context menu (usually available via right mouse button) or the del(ete) key. Key may be difficult to find localized - german Entf is not obvious to many…
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Context menu is also a good place to rename the file/document sheet.
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If you wish to move/copy tabs, open your sheet you can also use the context menu - here the menu of the of the tab.
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If you prefer to delete from inside LO read the following, but remember not to try deleting an open file. Another way for renaming is to Save-as with a new name and then deleting the original.
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PS: before you start deleting, consider thinking of backups…