CUSIP No. 480206-200 13D Page 13 of 13
Exhibit 6
JOINT FILING AGREEMENT
Pursuant to Rule 13d-1(k) promulgated under the Securities Exchange Act of
1934, the undersigned hereby agree to the joint filing of this Statement on
Schedule 13D including any amendments thereto.
This Agreement may be executed in any number of counterparts, each of which
shall be deemed an original, but all of which shall constitute one and the same
instrument.
Dated: April 8, 1999
COMCAST CORPORATION
By: /s/ Xxxxxx X. Block
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Xxxxxx X. Block
Vice President
COMCAST CABLE COMMUNICATIONS, INC.
By: /s/ Xxxxxx X. Block
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Xxxxxx X. Block
Vice President
