simula-if-indent

simula-if-indent is a variable defined in `simula.el'.
Its value is

(0 . 0)

Documentation:
Extra indentation of THEN and ELSE with respect to the starting IF.
Value is a cons cell, the car is extra THEN indentation and the cdr
extra ELSE indentation. IF after ELSE is indented as the starting IF.

You can customize this variable.