- $session-set! var #!optional valprocedure
If var is a quoted symbol, set the value of var to val. If val is not provided, var will have its value set to #f.
var can be an alist mapping session variable names to their corresponding values.
Examples:
($session-set! 'foo "foo value") ($session-set! '((foo . "foo value") (bar . "bar value") (baz . "baz value")))