The following example changes the Arial bold font to the Sans Serif font, changing only the name.
Arial:*:bold:*=Sans Serif:*:*:*
The following example changes the 8 point Courier New font to 9 point Sans Serif font with the bold attribute, changing the font name, size, and weight.
Courier New:8:*:*=Sans Serif:9:bold:*
The following example changes the Courier New font to the Sans Serif font that is one point larger, changing the name and relative size.
Courier New:*:*:*=Sans Serif:+1:*:*
The following example increases all font sizes by 1 point.
*:*:*:*=*:+1:*:*