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Fnordadel Extended Command Tutorial
There are two types of commands in Citadel. The basic, single-key commands
are the most commonly used ones, and can be listed by typing [?] at any room
prompt.
The extended commands allow a lot more variety. Whenever possible, things
are structured so as to be similar to each other, to reduce confusion.
The extended commands are begun with a mode character, followed by a main
command, then some optional modifiers, and ended by what it is that will be
processed. Some commands will take a user name, file name, or date parameter;
these commands are the only ones that must be ended with a carriage return.
The mode character tells the system you're using an extended command and
what type of extended command it will be. Normal extended commands that deal
with rooms, messages and files start with a period, ".". Floor extended
commands, which deal with entire floors, start with a semi-colon, ";". Door
extended commands, which permit you to run other programs from within the
system (e.g. games or utilities), start with an exclamation mark, "!".
Most extended commands will either be "enter" or "read" operations.
Fnordadel defines any command you use that results in data being sent to the
system as an "enter" command. Any command that results in data being sent
from the system to you is a "read" command.
To summarize extended command structure:
<mode> <main command> <options> <what to process>
<prompts for any additional data>
An example: If you enter the characters ".ryu+n", the system will echo back
to you something like ".read ymodem user after new messages". It will then
prompt you for a user name and a date. The command lets you use the Ymodem
transfer protocol to download all new messages in the current room, from a user
you specify, entered after a date you specify. The command fits the general
structure like this:
<mode> = "." for "extended command"
<main command> = "r" for "read"
<options> = "yu+" for "ymodem user after"
<what to process> = "n" for "new messages"
<prompts> = "which user" and "After when"
At all times, the [?] key is available to provide a menu of available
commands. For example, typing:
.R(ead) [?]
.E(nter) [?]
.T(erminate) [?]
will provide menus or option lists for the appropriate commands.
%%SEE ALSO:
%ENTER The extended Enter command
%FLOORS All about Floors
%READ The extended Read command
%SUMMARY A list of all the extended commands
%TOPICS Main help topics list