Add Tooltip for the three LC2 modes
The meaning of the three LC2 modes being unclear,
a concise explanation is wanted.
It could go along the following lines:
Edit : prepare Crocus command file for storage
Emulate : prepare Crocus command file, simulate sending it and load the corresponding result file for postmortem analysis
Send : prepare and send Crocus command files, ask Crocus for result file and display it in the Load cmd/result tab
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