| Subject | English | Welsh |
| comp., MS | absolute positioning | lleoli absoliwt (Placement of an element relative to either the element's parent or, if there isn't one, the body. Values for the element's Left and Top properties are relative to the upper-left corner of the element's parent) |
| comp., MS | fixed positioning | lleoli sefydlog (Placement of an element relative to either the element's parent or, if there isn't one, the body. Values for the element's Left and Top properties are relative to the upper-left corner of the element's parent) |
| comp., MS | relative positioning | lleoli cymharol (Placement of an element in the natural HTML flow of a document, but such that its position is offset from the preceding content) |
| comp., MS | sub-pixel positioning | lleoli is-bicseli (A font rendering technique that takes advantage of partial pixels to make text appear sharper on the screen) |