This text will be green if the rule has been applied.
/*/*/
#dummy {}
#testElement {
color: #00cc00;
}
/* */
In Opera 5.x, the first rule immediately after the first set of comments will be ignored so a dummy rule can be placed there as shown in the example.
This hack can also be used to hide single or multiple declarations within one rule (as opposed to whole rules as shown in the example).