It depends how you installed Sage.
Many package managers have separate packages for various parts of Sage.
For example in Debian-based GNU/Linux distributions, including Ubuntu, there is a separate package for the SageMath Jupyter kernel, and for the documentation in each language, and for SageTeX.
Select from the list below what you want:
$ sudo apt install \
sagemath \
sagemath-jupyter \
sagemath-doc-de \
sagemath-doc-en \
sagemath-doc-fr \
sagemath-doc-hu \
sagemath-doc-it \
sagemath-doc-ja \
sagemath-doc-pt \
sagemath-doc-ru \
sagemath-doc-tr \
sagetex \
Asked: 2020-07-29 18:47:26 +0200
Seen: 308 times
Last updated: Jul 29 '20
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What operating system? How was Sage installed?
@slelievre Windows 10 Enterprise and installed using Sage 9.1 exe with documentation package installed as well.
@slelievre Just wanted to make sure you saw the above comment.
What happens if you type
matrix?then the "enter" key instead of the "tab" key?@slelievre Here's a screenshot: screenshot on my Dropbox