Also colon is a clause separator, but it is only valid after a label. Current environment is a particular environment to which commands is routed if no explicit environment is specified for their routing. Current procedure level is the procedure level in effect at a certain point during execution. Daemon Decimal digit Device driver Digit is a single character having a numeric value associate with its glyph. Empty string Environment is a interface to which REXX can route commands and afterwards retrieve status information like return values .
Evaluation is the process applied to an expression in order to derive a character string .
Exposing is the binding of a variable in the current procedure level to the variable having the same name in the caller routine . This binding will be in effect for as long as the current procedure level is active. Exponential form is a way of writing particularly large or small numbers in a fashion that makes them more readable. The number is divided into a mantissa and an exponent of base 10. Expression is a non-empty sequence of tokens , for which there exists syntactic restrictions on which tokens can be members, and the order in which the tokens can occur.