## WHOS Describe Currently Defined Variables With Memory Usage

Section: Inspection Functions

### Usage

Reports information on either all variables in the current context or on a specified set of variables. For each variable, the `who` function indicates the size and type of the variable as well as if it is a global or persistent. There are two formats for the function call. The first is the explicit form, in which a list of variables are provided:

      whos a1 a2 ...

In the second form

      whos

the `whos` function lists all variables defined in the current context (as well as global and persistent variables). Note that there are two alternate forms for calling the `whos` function:

      whos 'a1' 'a2' ...

and

      whos('a1','a2',...)