/usr/bin/save2scp is in biosig-tools 1.3.0-2.1build1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 | #!/bin/sh
### conversion into SCP-ECG (EN1064) standard
save2gdf -f=SCP $1 $2 $3 $4 $5 $6 $7
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