File psl-1983/3-1/doc/nmode/nm-typos.topic artifact 0170b0b2fd part of check-in 9992369dd3

.silent_index {typos} idx 14-1
.silent_index {Backspace} idx 14-1
.silent_index {deletion} idx 14-1
.silent_index {words} idx 14-1
.silent_index {sentences} idx 14-1
.silent_index {killing} idx 14-1
.silent_index {transposition} idx 14-1
.silent_index {case} idx 14-2
.silent_index {words} idx 14-2
.silent_index {typos} idx 14-2
.silent_index {shifted-digits-association-list} idx 14-2