7. Embedded QUEL for Pascal : Pascal Variables and Data Types : Variable and Type Declarations : Reserved Words in Declarations and Program Units
 
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Reserved Words in Declarations and Program Units
All EQUEL keywords are reserved; therefore, you cannot declare variables with the same names as those keywords. In addition, the following Pascal words, used in declarations and program units, are reserved and cannot be used elsewhere, except in quoted string literals:
array
extern
function
procedure
varying
case
external
label
program
const
file
module
record
declare
fortran
otherwise
type
do
forward
packed
var
The word module cannot be used as an identifier in EQUEL/Pascal, although it is allowed in Pascal. The EQUEL preprocessor does not distinguish between uppercase and lower case in keywords.