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Template documentation (for the above template, sometimes hidden or invisible)
Number Required How to use Example
1 No Display name, bold with a colon afterwards. If '' is used, it italicizes instead. Special
2 Yes Data, put a variable with a pipe in it. {{special|}}
3 No Indents a number of times equal to the number listed, up to a maximum of 4. If there a value is listed that doesn't make any sense or falls outside of the maximum, adds a single indent (to make it an optional sub-property) 3

This is for usage inside of templates, thus it begins with an exclamation mark instead of an alphabetical character.

Basically, Instead of writing
{{#if: {{{param|}}}|}}

Param:  {{{param}}}
you instead will write

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