**13.ALTER** Purpose:Command is used to change the value of a parameter. Status:Implemented Syntax: alter alter parameter-name value Comments:Sets the value of specified parameter Example: To modify the value of vcc in a ciruit gnucap>alter vcc = 15 gnucap> and to modify the resitances say R1 and R2 gnucap>alter R1=5k R2=100 gnucap>