| ERN | |
| Syntax | ERN ERN name ERN name1 name2 name3 ... |
| Explanation | ERN removes the variable(s) specified by
its input from the Logo workspace. ERN used without any inputs removes all user-defined variables from the workspace. See also ERASE, BURIEDNAMES, BURYNAME, and UNBURYNAME. ERN does not evaluate its input. Therefore, you can supply the inputs without quoting them. If you want Logo to evaluate an input, surround it with parentheses. |
| Examples | PONS COLOR is BLUE NUMBER is 2 JOHN is JANE ERN COLOR ERN NUMBER PONS JOHN is JANE |