This function takes a dynamicdata table and iterates over it, clearing local data. The first column is used as the keys to clear.
This function has one parameter, dataTableName, which is the name of the dynamicdata table to use.
If the dynamicdata table exists, it returns True.
<@dynamicdata MyDataTable@>keyfoobarbaz<@end@>
<$foo = 1$><$bar = 2$><$baz = 3$><$exec ddSetLocalEmpty("MyDataTable")$><$if foo or bar or baz$> [[% This will not be executed as foo, bar, and baz are all empty. %]]<$endif$>