How do I change the size of buttons (not just their text)?

Hi. I’ve seen how I can change the size of the text that appears in buttons, but not the actual button sizes themselves. The result is that I have text squished out the sides of the boxes.

Any pointers? Thanks in advance.

Why yes I do. Put your mouse cursor over the button stuff and ctrl - scroll wheel, or mouse cursor over buttons and plus sign from the number pad.