v811 - 6th of November

Bug fix: Classic 6 (on iPad)
The virtual (GeoGebra) keyboard opens for the search menu.
Improvement: input
"--" is calculated as multiplication: [i]eg. [/i][i]"--4+3" yields 7[/i].
New CAS Command
[url=https://wiki.geogebra.org/en/Extremum_Command]Extremum( <Function>, <Start x-Value>, <End x-Value> )[/url]

Information: v811 - 6th of November