File psl-1983/3-1/doc/nmode/nm-replacement.function from the latest check-in

.silent_index {replace-string-command} idx 19-1
.silent_index {query-replace-command} idx 19-1
.silent_index {count-occurrences-command} idx 19-1
.silent_index {delete-non-matching-lines-command} idx 19-1
.silent_index {delete-matching-lines-command} idx 19-1