It is now 6 years on from when this post was originally made (2009, 
currently 2015) and it is proving impossible to find a clear reference to 
keyboard shortcuts in SAGE. The context I have for this is two fold. One. I 
note William Stein and others commenting on the low retention rate for SAGE 
users. Two, if one downloads and installs on Virtualbox the most recent 
version of SAGE 6.9. It is very problematic to find out how to do simple 
navigation tasks in the Notebook. No clear hints exist on the notebook 
active worksheet page or home page on how to find key board settings and 
what they do.  It is all too easy to get trapped in the downloads page for 
example. Being a novice user, I like many I am sure, have clicked on 
downloads, gone there and seen the list of downloaded files. But, for the 
life of me, nothing seems present to return me to the worksheet I was in or 
the home page of the notebook session. After hours of searching across 
multiple days, I finally found a way to get back to the SAGE notebook 
session from a shell escape to command shell but only if I was originally 
in the Notebook session worksheet to begin with. (Centos 6.7 in this case, 
though the same applies to Centos 6.6). A user somewhere mentions trying 
Right ctrl F2, or R cntrl F7 and finally I find that Rctrl F7 works. But 
only to get back to the Notebook session from the command line. It doesn't 
work to get back from the downloads folder. Nor does right clicking in the 
downloads folder and selecting "Back"... you just seem to be trapped there. 
It cannot possibly be the case that there is no way back except to restart 
the VM, can it? So my point is simply, navigation does not need to be so 
problematic. Finding out how to navigate, does not need to be a major 
effort. But, if it is, then User Retention goes down. There are of course 
other reasons. But, some of you involved in the presentation of the 
information in link below, need to be able to simplify the conceptual 
presentation of usable information. A simple table of what keys do what 
things in which VM environments, or Cloud environments...Still don't have a 
way out of the downloads folder. No wonder retention suffers.

On Saturday, July 18, 2009 at 3:25:07 PM UTC-5, Jason Grout wrote:
>
> Chris Chiasson wrote:
> > I just want to add that I (eventually) found the following keyboard
> > shortcuts I was looking for in another thread on the developer's list
> > and that they should probably be added under the notebook section of
> > the page shown at:
> > 
> > 
> http://sagemath.org/doc/tutorial/interactive_shell.html?highlight=keyboard
> > 
> > Here are the shortcuts I was looking for:
> > 
> > Create new cell (actually it splits cells, but whatever): Ctrl + Enter
> > Delete cell (actually it merges cells): Ctrl + Backspace
> > Evaluate cell (already knew this one from Mathematica): Shift + Enter
> > 
> > --
>
> Thanks for pointing out a place in the docs that should be improved. 
> These shortcuts (and others) are also documented in the page that comes 
> up when you click "Help" in the upper right corner of the notebook. 
> Maybe the tutorial should just say to read that page, if it doesn't 
> already?
>
> Jason
>
> --
> Jason Grout
>
>

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