Enhancements  1
goof-proof  1
Antelope Freeway  1
CP/M  1
fence character  1
dot command  2
colon  2
page count  2
help mode  3
prompt mode  3
expert mode  3
abort  3
input file  3
lines per page  4
subfiles  4
fence character  4
fence character  4
control characters  4
assembly language  4
source code  4
unsorted index  5
batch commands  5
subfiles  5
examples of output  6