Smell restrictions (ADRIFT 5 example)
From IFWiki
ADRIFT 5 is not written like a computer program, instead you click a button to create a new object and then fill in the details of that object on a form.
Where you see "Short description: 
Street
" this means that you should look for the line labeled "Short room description" and type in the text "Street".
"
Dynamic" indicates that you should select this choice from a list.
"
Object is wearable" indicates that you should click on this box to select it.
Properties
Odour
Name: Odour
Property of: Any Item
Type: Text
Locations
Street
Short description: Street
Long description: You are in a street. The sewer is below you.
Move Down to: Sewer
Sewer
Short description: Sewer
Long description: You are in a sewer. The street is above you.
Move Up to: Street