Click on a letter in the alphabetical list of advanced options to open a list of advanced options that begin with that letter, ignoring the initial letters XS. For example, under A you will find the advanced option XS_AISC_WELD_MARK , under B , XS_BACKGROUND_COLOR, etc.

Advanced options starting with XSR are listed under R. They control how Tekla Structures displays imperial units in reports and drawing tables.