IfNull()command or the
IfNull()command will initialize a variable when it has no value set yet.
IfNull()but with 2 commands. This set can be used in the normal scripts, but not in custom command scripts. Custom commands do not support
IfNull()because global variables in custom commands are not allowed.
Load()we can preserve data between update cycles.
SessionSet()will save the value and
SessionGet()will get the value and continue execution. This set can also be used in order to control execution flow within your script.