| Subject | English | Sinhala |
| comp., MS | left mouse button | වාම මූසික බොත්තම (The button on your pointing device that you use most often for clicking and double-clicking) |
| comp., MS | mouse button | මූසික බොත්තම (A movable piece on a device that is pressed to activate some function) |
| comp., MS | primary mouse button | මූලික මූසික බොත්තම (The button on your pointing device that you use most often for clicking and double-clicking) |
| comp., MS | right mouse button | දකුණු මූසික බොත්තම (The button on your pointing device that you use to display shortcut menus or other program-specific features) |