Final answer:
If an edge or face is too small to select, zoom in, use selection filters or modes, increase selection sensitivity, or use keyboard shortcuts to select the element.
Step-by-step explanation:
When working with a graphical user interface (GUI) in design software and an edge or face is too small to be easily selected by the pointer, there are several strategies you can use to improve selection. One common technique is to zoom in on the area of interest to make the smaller elements larger and easier to select. Alternatively, you can use selection filters or switch to a different selection mode that targets edges or faces specifically, allowing the software to ignore other types of elements that aren't relevant to the current task. Some software allows you to increase the selection sensitivity or hit area, which can make it easier to select small elements. Keyboard shortcuts are often available to cycle through possible selections under the pointer, as well.