Improve help about Command line: add info about executing a list of commands

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Suggestion:

In the Help - Command line, below the text:

The command line also handles internal commands starting with cm_ and em_, and commands with parameters like OPENTABS. The latter must be written in capital letters.

Add the following text (if the information is correct):

Executing a comma-separated list of commands is also possible, but limited to 'cm_' and 'em_' commands only and cannot include parameters.