In LDPL each variable is initialized with a value by default. This means that when you declare a variable, it will, by default, hold this value until it's changed.
NUMBER variables are initialized with the value
0. Each element of a NUMBER MAP is a NUMBER variable, and thus also initialized to
TEXT variables are initialized to the empty string
"". Same goes to TEXT MAPs, where each element is also initialized to
LISTs are initialized empty by default and trying to access a non-existing index will result in an error.