At least for SST and BST its's how the 41C behaves.Geoff Quickfall wrote: ↑Sun Mar 01, 2020 10:05 pmPress and hold the SST key and you get NULL.
Press and hold the down arrow key and you get NULL.
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Press and hold the BST key and you get no NULL.
Press and hold up arrow key and you get no NULL.
Günter