When I write a short article, how do I put a name to it so I can look it up again?
Your frustration is evident. I think the answer to your question is to take an elementary course in how to use a computer. They will teach you about toolbars, menus (especially the drop-down variety), filenames, file managers, directories, folders, and generally the elements of how to use almost any software that will run under your particular Operating System. Hope this helps.
Normally one saves the file with a name that is meaningful to you, in a folder (or series of folders) whose name is meaningful to you.
See LibreOffice Help on Saving Documents.
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I suspect that this confusion springs out of the difference between “cloud office” and traditional solutions with local storage and locally installed software.
Below is a simplified explanation of the two “paradigms”, or different work platforms. Hopefully this will help to solve the issue.
With cloud apps (such as Google’s G-suite or Microsoft’s O365) connected to cloud storage (such as Google disk or MS OneDrive), commonly the distinction between the document you are working on and the stored file is not apparent to the user. If you edit the document, changes are stored virtually instantly. If you change the document name in the application window (usually on the top bar), the new name will be immediately applied to the stored file. The user does not need any save procedure.
When working locally, the work in progress is detached from the file stored. While work is in progress, it is stored in volatile memory, known as RAM, which is cleared when electrical power is cut off. You have to actively choose to save in order to transfer your work to non-volatile storage, aka. “disk”, which is persistent when power is switched off. If you choose to save with a different name, you create a new copy independent of the original. To change the name of an existing file you need to use file operations. The file manager is another application not integrated with the Office software, so the “recent documents” list in the software will not be updated to reflect the new name.
I have seen this kind of problems escalate in the last couple of years, as primary schools in our district (and nationwide I suspect) generally use cloud solutions, while our school (like most secondary schools) requires the use of computers with local resources. Most of our first graders need considerable time to transition. There are advantages to both ways, and there are good reasons for the differences, but navigating in this complex environment does pose additional challenges. We humans are different, and cope with these challenges to a different degree.