There are two basic methods of declaring high or low before the showdown in all High-Low Poker games. They are (1) simultaneous declarations, and (2) consecutive declarations .... It is a sad but true fact that the consecutive method spoils the game. ---John Scarne's Guide to Modern Poker
A declaration introduces a name for a constant, type, variable, exception, or procedure. The scope of the name is the block containing the declaration. A block has the form:
Decls BEGIN S END
where
Decls is a sequence of declarations and S is a
statement, the executable part of the block. A block can appear as
a statement or as the body of a module or procedure. The declarations
of a block can introduce a name at most once, though a name can be
redeclared in nested blocks, and a procedure declared in an interface
can be redeclared in a
module
exporting the interface.
The order of declarations
in a block does not matter, except to determine the order of
initialization of variables.
Each type of declaration is described below