replace "output" by "showElements"

git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1718 b0c55286-4f34-0410-a049-a1e7e93b0762
Simplify Open Math code.


git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1719 b0c55286-4f34-0410-a049-a1e7e93b0762
Documentation fixes.


git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1720 b0c55286-4f34-0410-a049-a1e7e93b0762
Add classical orthogonal polynomials to expressions.


git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1721 b0c55286-4f34-0410-a049-a1e7e93b0762
s/import/import from/


git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1722 b0c55286-4f34-0410-a049-a1e7e93b0762
Add 'uentries'.


git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1723 b0c55286-4f34-0410-a049-a1e7e93b0762
Do not treat 'OutputFrom' in special way.


git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1724 b0c55286-4f34-0410-a049-a1e7e93b0762
Clean up News chapter in FriCAS book.


git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1725 b0c55286-4f34-0410-a049-a1e7e93b0762