Template documentation
Shorthand for multiplying a variable with something: "{{#vardefine:{{{1}}}|{{#expr:{{#var:{{{1}}}}}+{{{2|0}}}}}}}"
See also: Add, Save, Load
{{Save|x}} {{#vardefine:x|10}}{{#var:x}} {{Multiply|x|3}} {{#var:x}} {{Load|x}}
10
30