Single Precision Operands have a Tag 0 and occupy 1 Stack Cell.

0018 (02,0002) 0 000000 000000 SINGLE1 (Real) 

They can be generated using any sequence of operators which result in a Tag 0 Word.

The Algol Compiler creates a Single Precision Operator with this code,

	ZERO

There are no special BlockExit requirements.