The ENTER statement is designed to facilitate the use
of more than one source language in the same source program. However, only COBOL is
allowed in the source program.
The ENTER statement is syntax checked but has no effect on the execution of the
program.

Format
>>-ENTER--language-name-1--+----------------+--.---------------><
'-routine-name-1-'
- language-name-1
- A system name that has no defined meaning. It must be either a correctly formed
user-defined word or the word "COBOL." At least one character must be alphabetic.
- routine-name-1
- Must follow the rules for formation of a user-defined word. At least one character
must be alphabetic.