Musescore dotted notes

1. What does the dotted notes do?
2. Are there dotted notes?

What does the dotted notes do?

A dot that is placed after the note to indicate a change in the duration of a note. The dot adds half of the value of the note to itself. For example, a dotted half note gets 3 beats - value of a half note is 2, half of 2 is 1 so 2 + 1 = 3.

Are there dotted notes?

Theoretically, any note value can be dotted, as can rests of any value. If the rest is in its normal position, dots are always placed in third staff space from the bottom, as shown in the example below.