actions and related efuns: (Not available with NO_ADD_ACTION)
add_action
command
commands
disable_commands
enable_commands
find_player
notify_fail
Archaic wizard functions: (Not available with NO_WIZARDS)
disable_wizard
enable_wizard
wizardp
The old ed interface: (#define OLD_ED)
ed
in_edit
The new one:
ed_cmd
ed_start
in_edit
query_ed_mode
Input handling:
get_char
input_to
in_input
receive
Output handling:
printf
say
shout
snoop
write
Information about user objects, and miscellaneous utility functions:
exec
interactive
message
query_host_name
query_idle
query_ip_name
query_ip_number
query_snoop
query_snooping
resolve
this_interactive
this_player
userp
users
Beek @ZorkMUD, Lima Bean, IdeaExchange, TMI-2, and elsewhere