What does SIS stand for?
SIS stands for "Psion Software Installation file"
How to abbreviate "Psion Software Installation file"?
"Psion Software Installation file" can be abbreviated as SIS
What is the meaning of SIS abbreviation?
The meaning of SIS abbreviation is "Psion Software Installation file"
What does SIS mean?
SIS as abbreviation means "Psion Software Installation file"
