The security policy of Oracle's Java programming language prohibits access to a computer's clipboard on the Windows and Mac platforms unless the Java applet is confirmed as a "trusted" source by the end user. Without access to the computer's clipboard, the end user cannot paste copied text into the Java environment such as a ParaChat Java chat room. To enabled the copy and paste functionality, the licensee of ParaChat software must specifically implement the optional "signed applet" room code in their web page. When the end user loads the ParaChat room implemented via a signed applet, a security dialog will display to the end user:

For access to the end user's computer clipboard to provide copy and
paste functionality, a user must "trust" the ParaChat applet
by clicking the "Run" button.
So that the security dialog does not display again during subsequent chat
sessions, check the "Always trust content from this publisher."
check box in the security dialog before clicking the "Run"
button. Please note that the "From: host7.parachat.com"
sub-domain "host7" can be different, but will always be followed
by ".parachat.com".
If the end user does not want to "trust" the ParaChat applet
to enable access to their computer's clipboard for copy and paste functionality,
the end user may click the "Cancel" button. The
ParaChat room will still load, and the end user will be able to chat normally
without copy and paste functionality.

For access to the end user's computer clipboard to provide copy and
paste functionality, a user must "trust" the ParaChat applet
by clicking the "Allow" button.
So that the security dialog does not display again during subsequent chat
sessions, check the "Allow all applets from "host7.parachat.com"
with this signature" check box (please note that the
sub-domain "host7" can be different, but will always be followed
by ".parachat.com"). Always trust content from this
publisher." before clicking the "Allow"
button.
If the end user does not want to "trust" the ParaChat applet
to enable access to their computer's clipboard for copy and paste functionality,
the end user may click the "Deny" button. The
ParaChat room will still load, and the end user will be able to chat normally
without copy and paste functionality.
Retrieving ParaChat Signed Applet Room Code
Customers may retrieve signed applet room code from their ParaChat service
administration area (Rooms tab -> modify a room -> Display Room
Codes -> Signed Applet Room Code). Customers may choose
to implement the signed applet room code in a separate web page apart
from their existing ParaChat room code so that only those users who require
copy/paste can "trust" ParaChat software to enable that functionality.