For example, {_T string="my name is %1" name="sagi"} will replace %1 with sagi. The parameter name is ignored, unless it is one of the reserved names (see below). Only the parameters order matters. Example for using multiple parameters: {_T string="The 1st parameter is %1, the 2nd is %2 and the 3nd %3." 1='one' 2="two " 3=three} {assign var=test value="my test"} {_T string=$test}