Description:
Many times I start with a name for a Calc document, and it well describes the first tab.  As I add more tabs I realize that the document is more about a larger narrative.  
My example: Started a Calc sheet as "Read". A list of authors to read.  Then I added tabs: Groups, Terms, Phrases, Quotes, Events, Ideas, Learnt, Learn Path, Questions...
I realized this is a Learning plan and outline, not just based on authors and their writing output.
Just a convenience, but seems like a major option missing in all File menus, to rename in-place.   It may also reduce detritus as the use of "Save As..." creates a new file and leaves the old file.

Steps to Reproduce:
1.Menu option File
2.Option "Rename As..."
3.

Actual Results:
<Not available>

Expected Results:
Desired:
1) Window title changes to match new name
2) File is renamed on disk.
3) File handle is silently refreshed to underlying file with as little user disruption as possible (blinking, reopening)


Reproducible: Always


User Profile Reset: No



Additional Info:
Would block renaming to itself or another existant file in current directory.
Possibly allow Undo.
Keep in file history?  Sometimes I wonder what a file was before, or what directory it came from, when.
Maybe disallow directory change.  Move is semantically different than Rename, and I think Windows/Linux/Mac all missed this in an effort to reduce namespace pollution.