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doc/Factoids.md: very minor edits

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Pragmatic Software 2020-01-08 22:10:40 -08:00
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* [Using command-piping](#using-command-piping)
* [Improving SpongeBob Mock meme](#improving-spongebob-mock-meme)
* [Special variables](#special-variables-1)
* [$nick](#nick)
* [$args](#args)
* [$arg[n]](#argn)
* [$arg[n:m]](#argnm)
* [$arglen](#arglen)
* [$channel](#channel)
* [$nick](#nick)
* [$randomnick](#randomnick)
* [$0](#0)
* [List variables](#list-variables)
@ -174,7 +174,7 @@ the C programming language because why not?
#### Setting a usage message
Suppose you want command to display a usage message if there are no arguments provided. You can use
Suppose you want the command to display a usage message if there are no arguments provided. You can use
the [`factset`](#factset) command to set the `usage` [factoid meta-data](#factoid-metadata).
<pragma-> !testargs
@ -273,10 +273,7 @@ to strip the timestamp and the name, leaving only the message. `smr` stands for
<PBot> gIrLs ArE dUmB!
## Special variables
You can use the following variables in a factoid or as an argument to one.
### $nick
`$nick` expands to the nick of the caller.
You can use the following variables in a factoid or, in some cases, as an argument to one.
### $args
`$args` expands to any text following the keyword. If there is no text then it expands to the nick of the caller.
@ -293,6 +290,9 @@ You can use the following variables in a factoid or as an argument to one.
### $channel
`$channel` expands to the name of the channel in which the factoid is used.
### $nick
`$nick` expands to the nick of the caller.
### $randomnick
`$randomnick` expands to a random nick from the channel in which the factoid is used. Filtered to nicks who have spoken in channel in the last two hours.