label (reserved word)
A label declaration part declares labels that markin the corresponding statement part.
label identifier, ... identifier;
Each label must mark only one statement.
In addition to an, a digit sequence between 0 and 9999 can also be used as a label.
Control is transferred to a label via astatement.
label 1, 2;
1: WriteLn ('Abnormal program termination');
2: WriteLn ('Normal program termination');