This procedure is defined in the server but not documented via ad_proc or proc_doc and may be intended as a private interface.
The procedure is defined as:
proc nsmcp::accessScanRangeInit {fileVar} {
upvar 1 $fileVar file
if {![dict exists $file rangeMin]} {
dict set file rangeMin {}
dict set file rangeMax {}
# A pre-upgrade continuation has not verified the preceding bytes.
dict set file rangeUncertain [expr {[dict get $file offset]!=0}]
}
}