Numbers are entered using slides (one slide per digit) on the side of the device.
Typical is one faculty member notorious for using offensive slides in his lectures, without understanding the distress among female students.
This will come as news to legions of art history professors who use slides in every lecture.
When using slides or visual aids, keep out of your audience's line of sight.
In addition, persons might use slides or similar evacuation systems and for ships the lowering of life-boats.
At least 30 passengers on today's flight were evacuated using slides, others used stairs.
Standard slide guitar players use slides that are of the bottleneck design and worn over one finger.
If you're going to use slides, see that the room can be darkened easily - and check your sightlines.
Trombones, on the other hand, have used slides since their inception.
We have a portable overhead projector and it is one of the few schools with electricity, so I was able to use slides.