1. You could also try setting the following pens to 91 (masking pen).
2D symbol Type>Invisible Structures Line (dashed perimeter line the story below).
2d Symbol Type>Background Fill Type>Fill Pen :this will mask out the pattern lines of the fill on the story below.
These pens will also affect display on the placed story and the story above is you have chosen a 2D symbol that includes dashed lines.
2. The stairmaker stair: if you turn off story sensitive you could place the appropriate type of masking fill on each story.
3. Set the stair to show on all stories trun off its stair layer on stories which you don't want it to show assuming
4. break the one stair into two different ones.
Someone else here might know how to amend the script below so it shows the stair rather than this fill.
5. IF GLOB_CH_STORY_DIST < -EPS then
rail=`None`
numa=0
tx=0
walkingDirUPDN=`None`
brk=0
walkl=0
solid_line = dash_line
temp_line = dash_line
gs_cont_pen=gs_DashLinePen
SET LINE_TYPE dash_line
gs_fill_type=65
gs_back_pen=0
ns=0
ENDIF
Erika
Architect, Consultant
MacBook Pro Retina, 15-inch Yosemite 2.8 GHz Intel Core i7 16 GB 1600 MHz DDR3
Mac OSX 10.11.1
AC5-18
Onuma System
"Implementing Successful Building Information Modeling"