Let's create an example:

Just go to tiki-admin_modules.php

Click on the tab "Custom Modules", if not there by default.

Create a new Custom module:

lefthand side

Title: My new Module
Name: my_new_module

righthand side

don't touch anything there

bottom in the code area

paste simple HTML:

 This is my module in the footer

Apply!

Go to the left tab "Applied Modules" and

• find the button "Add Module" and click on it
• search for the module "my_new_module" and click on it
• apply the module to the footer and

nobox=y

Now let's change the code and add some SmartySyntax from themes.tiki.org/Template+Tricks

So please go back to the second tab "Custom Modules":

 
I am {$user} {if $group eq "Admins"}and I am in the Group {$group}
{/if}

Apply and see what's changed

Now Wikisyntax:

Go to the second tab "Custom Modules" again, to edit you module.

Delete the content of the code area and put in this:

{wiki}{literal}
{SPLIT(colsize=30%|5%|65%)}
__I can use__ ''WikiSyntax'' 
and %%% WikiPlugins

---
---
{wiki}{literal}{module module=>menu, id=>43, nobox=y}{/literal}{/wiki}
{SPLIT}{/literal}{/wiki}

Apply!

and see, what happens.