Rules for variable names:
In addition, the variable names must always be mnemonic that means they should make some sense. For illustration, if the variable is storing the radius of a circle, a name like "radius" would make sense; "x" perhaps wouldn't.
The Workspace Window represents the variables which have been created in the present Command Window and their values.
The commands shown below associate to variables:
(i) Who shows variables which have been defined in this Command Window (this merely represents the names of the variables)
(ii) Who shows variables which have been defined in this Command Window (this represents more information on the variables, likewise to what is in the Workspace Window)
(iii) Clear clears out all the variables, therefore they no longer exists.
(iv) Clear variablename clears out a specific variable.