The destroy command will delete plot structures.
destroy [all] | [plotname ...]Giving this command will throw away the data in the named plots and reclaim the storage space. This can be necessary if a lot of large simulations are being done. WRspice should warn the user if the size of the program is approaching the maximum allowable size (within about 90%), but it is advisable to run the rusage space command occasionally if running out of space is a possibility. If the argument to destroy is all, all plots except the constants plot will be thrown away. It is not possible to destroy the constants plot. If no argument is given the current plot is destroyed.