Remove a scan, or nominated range of scans, from a SPECX data file. Actually just sets the scan number negative, so that the spectrum is still there, even if not accessible to a READ-SPECTRUM or INDEX-FILE command. This process can be reversed with a RECOVER-FILE operation, which sets all scan numbers to be positive. COMPRESS-FILE physically removes all deleted spectra.
Examples:
>> delete-spectrum-from-file<CR>
File number? (^z to list) [1] <CR>
Scan number or range (S1,S2)..? 4<CR>