IsoDraw drawing sizes preferences

I have been working on my PRF files to get IsoDraw environment the way I want. I have noticed that in the PRF file there isn't a portion of the file for setting drawing sizes. Is there a way I can add to the list drawing sizes under EDIT--->Preference--->Drawing--->Format?

I am using IsoDraw 7.3 Datecode M031 build 1

Thanks,

Keith Howard

Northrop Grumman