The Write options window allow the user to select new capabilities for the WRITE and AFWRITE commands. Initially the ACS-SASSI User Interface was designed to be a replacement Prep with no changes to the WRITE and AFWRITE commands. However due larger model sizes, it is necessary to expand the fixed integer field size 5 to be increased to 6 for some module input generated by WRITE. Options were also added to the WRITE command to help users with model analysis in batch. If no options form this window are selected the AFWRITE and WRITE command will write the same files as the commands from PREP.