Hi axelm
...
> What does that "$1" actually represent?
> Some kind of placeholder I suspect.
...
> I also saw them talk about $1 and $2, what is the $2 for?

Those are variables, or placeholders as you wrote..
You can have nine different variables/placeholders in one statement:
$1 $2 $3 $4 $5 $6 $7 $8 $9..

Examples: http://tiddlywiki.org/wiki/Tiddler_(macro)

I like to use variables in templates. I create a tiddler
[[SomeTiddlerTemplateName]] which contains some reusable form:
|This|is a|table|h
|$1|$2|$3|
|$4|$5|$6|
|$7|$8|$9|
and use it in other tiddlers via the tiddlermacro ie.
<<tiddler SomeTiddlerTemplateName with: 1 2 3 4 5 6 7 8 9>>

Cheers Måns Mårtensson

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