W3TPL/tag/let

About

Action: Assigns a value to a variable.

Options

These are currently in flux, and documentation here may not reflect what actually works.

supported

• echo: replace the tag with the resulting value
• index= treats name as an array, and specifies the element to use
• name= name of variable to set
• null: set the variable to NULL
• oparse: parse the output (only has an effect if "echo" is present)
• self: takes starting value from same variable, to allow unary operations

unsupported

These were not working with the current MediaWiki version when last tested:

• load (should probably be "fetch"): retrieve starting value from the current page's properties
• save (should probably be "store"): store the result in the properties for the current page