ts by declaring the new types of data it will contain and a new owner.&nbsp; This is the first step in responding to a user's copy or cut command and must precede the messages that actually write the data.&nbsp; A <b>declareTypes:num:owner:</b> message is tantamount to changing the contents of the pasteboard.&nbsp; It invalidates the current contents of the pasteboard and increments its change count.</font>

<p><font face="Times"><i>numTypes</i> is the number of types the new contents of the pasteboard may 