clearglobal kills global variables

## Syntax

                clearglobal()
                clearglobal nam1 ... namn
                clearglobal('nam1', ...,'namn')

## Arguments

nam1,..., namn

  valid variable names

## Description

`clearglobal()` kills all the global variables.

`clearglobal nam1 ... namn` kills the global variables given by their names.

Note that `clearglobal()` only clears the global variables, the local copies of these global variables are not destroyed.

## Examples

    global a b c
    a=1;b=2;c=3;
    who('global')
    clearglobal b
    who('global')

## See also

- global
- who