RIDER TO LETTER AGREEMENT


This Rider to Letter Agreement (this "Rider") is entered into by and between
Stenograph Corporation ("Stenograph") and Sanwa Business Credit Corporation
("SBCC") this 28 day of October, 1994.  Unless otherwise defined herein, terms
used herein shall have the meaning given them in the Letter Agreement.

WHEREAS, Stenograph and SBCC entered into a letter agreement dated as of June
30, 1985 which amended and restated a February 21, 1980 letter agreement;

WHEREAS, Stenograph and SBCC on June 26, 1986, on May 29, 1990, on June 29,
1990, in January, 1991, and again on August 31, 1994 entered into amendments of
the letter agreement dated as of June 30, 1985 (the June 30, 1985 letter
agreement, as amended, being hereinafter known as the "Letter Agreement");

WHEREAS, the Letter Agreement describes the terms and conditions applicable to
SBCC's purchase from Stenograph of conditional sales contracts or leases;

WHEREAS, Stenograph has entered into and plans to enter into conditional sales
contracts and leases with Canadian Obligors, and for business reasons does not
desire to sell such conditional sales contracts and leases to SBCC, but to
obtain loans from SBCC collateralized by such conditional sales contracts or
leases;

WHEREAS, Stenograph and SBCC now desire to provide for SBCC's making loans to
Stenograph collateralized by the Canadian conditional sales contracts and leases
pursuant to the representations, warranties, indemnities, covenants and other
terms of the Letter Agreement, subject to such changes as are necessary to
reflect that the transactions are loans and not purchases and that the Obligors
are Canadians;

NOW, THEREFORE, in consideration of the mutual covenants contained herein,
Stenograph and SBCC agree as follows:

1.  The following definitions shall be applicable to the transactions covered by
    this Rider:

      "Canadian Contract" means any Contract in which the purchaser or lessee of
          the Equipment which is the subject of the Contract is a Canadian
          entity.

      "Loan" means a transaction in which SBCC lends money to Stenograph against
          the primary security of a Canadian Contract, all Payments thereunder,
          all Obligor Guaranties in connection therewith, the Equipment covered
          thereby, and all proceeds of all of the foregoing.




      "Mandatory Prepayment Amount" means, at any time, with respect to a Loan
          made in respect of a Canadian Contract,  the Principal Balance of the
          Note evidencing such Loan, plus any and all accrued interest and
          unpaid interest on such Principal Balance (including interest on
          overdue payments) at such time.

      "Note" means the promissory note, in the form attached hereto as
          Exhibit A, evidencing a Loan from SBCC to Stenograph.

      "Principal Balance" means, for any Loan made in respect of a Canadian
          Contract, the principal balance of the Note evidencing the Loan which
          remains outstanding at a particular point in time, after taking into
          account the application of all Payments received by SBCC.


2.  The representations, warranties, covenants, indemnities, and other
agreements contained in the Letter Agreement, and the rights and remedies
arising under the Letter Agreement shall govern the Loans that SBCC makes to
Stenograph collateralized by Canadian Contracts, except that:

      (a)  The transactions contemplated by this Rider are loans against
collateral security and not purchases of chattel paper secured by certain
collateral.  Accordingly, all references in the Letter Agreement to purchases of
Contracts shall be read, for purposes of the transactions contemplated by this
Rider, to mean Loans against the security of Canadian Contracts and references
to Contracts purchased under the Letter Agreement shall be read to mean Canadian
Contracts against which SBCC has made Loans.

      (b)  All collateral in which SBCC is or has been granted a security
interest under section 3 of the Letter Agreement shall continue to be security
for all of Stenograph's obligations under the Letter Agreement (including this
Rider), including the Loans.   Each Loan is primarily secured by, and Stenograph
hereby grants SBCC a security interest in, the Canadian Contracts, all Payments
thereunder, all Obligor Guaranties in connection therewith, the Equipment
covered thereby, and all proceeds of all of the foregoing.   The foregoing
collateral security also secures Stenograph's other obligations to SBCC under
the Letter Agreement.

      (c)  References to the Repurchase Price, the Default Repurchase Price or
the Standard Repurchase Price shall be read, for purposes of the transactions
contemplated by this Rider, to mean the Mandatory Prepayment Amount.

      (d)  With respect to Canadian Contracts, subpart (iii) of subsection 1(m),
"Obligor Default", is hereby amended and restated in its entirety as follows:

            (iii) insolvency of any Obligor, inability of any Obligor to pay its
            debts as they mature, the making by any Obligor of an assignment for
            the benefit of creditors, or institution of any proceeding by or
            against any Obligor under the United States Bankruptcy Code or the
            Canadian Bankruptcy and Insolvency Act or any similar law of the
            United States, Canada, or any state, province, or other competent
            political subdivision of either, alleging that the Obligor is
            insolvent or unable to pay its debts as they mature if such
            proceeding is not withdrawn or dismissed within sixty (60) days
            after its institution;

      (e)  With respect to Canadian Contracts, the following additional
paragraph shall apply with respect to the billing and collection procedures
described in Paragraph 8 of  the Letter Agreement:





            SBCC will also use reasonable efforts to invoice and collect any
            applicable  withholding tax due the Canadian government based on
            interest income earned with respect to the Canadian Contracts.  SBCC
            will use reasonable efforts to remit the appropriate amounts of such
            withholding tax to the Canadian government, and to file reports with
            the appropriate Canadian taxing jurisdictions, provided, however,
            that if at any time SBCC determines that the above-described
            procedure is inappropriate in any jurisdiction, it may, at its
            discretion, notify Stenograph of such determination and Stenograph
            shall promptly thereafter invoice, collect and remit such taxes and
            file such reports itself.  In no event will SBCC be liable or
            responsible for the collection or payment of any taxes (including,
            without limitation, any Canadian goods and services tax) with
            respect to the Canadian Contracts, the Payments, the Equipment or
            any lease, sale, transfer, assignment or other disposition of any
            Canadian Contract or any Equipment other than to remit to the
            pertinent taxing jurisdictions those monies actually collected by
            SBCC from Obligors under the Canadian Contracts and which are
            designated by such Obligors for payment of Canadian withholding
            taxes.  Stenograph agrees to indemnify SBCC from any liability it
            may incur from claims by the Canadian government, or any political
            subdivision thereof, asserting that SBCC is responsible for the
            payment or remittance of taxes in excess of the funds actually
            collected from and designated by the Obligors as described above.

3.   Except where they conflict with the terms of this Rider, all terms and
provisions of the Letter Agreement shall remain in full force and effect.

4.  Except as expressly provided for herein, this Rider will in no way affect
the existing rights of SBCC and Stenograph nor in any way be construed as a
waiver of any such rights.

5.  This Rider shall be binding upon and shall inure to the benefit of the
parties hereto and their respective successors and assigns.  This Rider shall
be governed by and construed in accordance with the internal laws (as opposed to
the conflicts of law provisions) of the State of Illinois.

IN WITNESS WHEREOF, Stenograph and SBCC have executed this Rider on the date
first set forth above and the provisions set forth herein shall be effective as
of Oct. 28, 1994.


                  STENOGRAPH CORPORATION ("STENOGRAPH")



                  By:  /s/ Robert J. Panfil
                      ---------------------------------
                  Title: Senior Vice President-Finance
                         ------------------------------




                  SANWA BUSINESS CREDIT CORPORATION ("SBCC")


                  By:  /s/ Paul Omohundro
                      ---------------------------------
                  Title:  Vice President
                         ------------------------------


                                      CONSENT OF GUARANTORS



      The undersigned guarantor of the obligations of Stenograph Corporation
under the above-referenced Letter Agreement hereby acknowledges and consents to
the above Rider to Letter Agreement and agrees that its obligations under its
Guaranties dated May 11, 1981, May 31, 1982, and December 28, 1988,
respectively, remain in full force and effect.


QUIXOTE CORPORATION


By:   /s/ James H. DeVries
     -----------------------------
Title:   Executive Vice President
        --------------------------

      The undersigned guarantor of the obligations of Stenograph Corporation
under the above-referenced Letter Agreement hereby acknowledges and consents to
the above Rider to Letter Agreement and agrees that its obligations under its
Guaranty dated August 31, 1994 remain in full force and effect.


LEGAL TECHNOLOGIES, INC.


By:   /s/ Robert J. Panfil
     -----------------------------
Title:   Chief Financial Officer
        ---------------------------




                               FIFTH AMENDMENT TO LETTER AGREEMENT


This Fifth Amendment to Letter Agreement (the "Amendment") is entered into by
and between Stenograph Corporation ("Stenograph") and Sanwa Business Credit
Corporation ("SBCC") as of the 31st day of August, 1994.

WHEREAS, Stenograph and SBCC entered into a letter agreement dated as of June
30, 1985 which amended and restated a February 21, 1980 letter agreement;

WHEREAS, Stenograph and SBCC on June 26, 1986, on May 29, 1990, on June 29,
1990, and again in January, 1991 entered into amendments of the letter agreement
dated as of June 30, 1985 (the June 30, 1985 letter agreement, as amended, being
hereinafter known as the "Letter Agreement");

WHEREAS, Stenograph and SBCC desire to revise the Loss limitation provisions of
paragraph 11 to provide that the maximum amount of Loss will be calculated on an
annual rather than a quarterly basis;

WHEREAS, Stenograph and SBCC now desire to amend the Letter Agreement to provide
for amendments consistent with the foregoing desire;

NOW, THEREFORE, in consideration of the mutual covenants contained herein,
Stenograph and SBCC agree as follows:

1.  The Letter Agreement is amended effective August 31, 1994 as follows:

a.    Subparagraph 11(b) of the Letter Agreement is hereby amended and restated
in its entirety as follows:

      (b)   The maximum amount of Loss which you will be required to bear on
            account of repurchases of Contracts under paragraph 11(a) of this
            Agreement (regardless of when such Loss is realized) shall be
            determined, except as set forth in paragraph 11(e), in accordance
            with this paragraph 11(b).

       (i)  Contracts other than Transferred Contracts.

            (A)   For calendar years prior to 1985, the maximum amount of Loss
                              shall be determined pursuant to the terms of the
                              1980 Agreement.

            (B)   For each calendar year ending after December 31, 1984, the
                              maximum amount of Loss you shall be required to
                              bear with respect to the




                              repurchase of Contracts under paragraph 11(a) of
                              this Agreement shall be an amount equal to ten
                              percent (10%) of the aggregate Balance of Payment
                              (determined as of the last day of the immediately
                              preceding calendar year) of all Unpaid Contracts
                              (as defined below) then assigned to us by you
                              pursuant to this Agreement.

            (C)   In making the foregoing computations, (A) a Loss with respect
                              to a Contract shall be deemed to have occurred on
                              the date we demand that you repurchase such
                              Contract regardless of the date when the
                              calculation of the amount of such Loss was
                              accomplished, (B) the maximum amount of Loss
                              that you shall be required to bear for any
                              calendar year shall be calculated without taking
                              into consideration the amount of Loss that you may
                              have sustained for any other calendar year, and
                              (C) the term "Unpaid Contracts" as used in this
                              paragraph 11(b) shall mean Contracts which have
                              not been repurchased by you under this Agreement
                              and which have one or more Payments remaining
                              unpaid.

            (D)   Notwithstanding any other provision of this paragraph
                              11(b)(i), in no event will your maximum liability
                              for Losses be less than $1,000,000 in any year.

      (ii)  TRANSFERRED CONTRACTS.  After you have established a Loss with
respect to a Transferred Contract in accordance with paragraph 11(c) below,
you shall request reimbursement for such Loss.  We will follow the procedures
set forth in paragraph 11(d)(ii) with respect to reimbursing you for such Loss
and/or debiting the Reserve Account in the amount of such Loss.

b.    Subparagraphs 11(d) of the Letter Agreement is hereby amended and
restated in its entirety as follows:

         (d) (i)  In the event that the performance of your obligations to
                        repurchase Contracts other than Transferred Contracts
                        under paragraph 11(a) of this Agreement causes your
                        aggregate Loss for any calendar year to exceed the
                        maximum amount of Loss which has been computed in
                        accordance with paragraph 11(b) of this Agreement for a
                        calendar year, we will refund the excess amount within
                        ten (10) days after receipt of your invoice for the
                        amount of excess Loss (provided the invoice shows the
                        calculations of the excess Loss).

          (ii)  After you have performed your obligations to repurchase a
                  Contract under paragraph 11(a) which is a Transferred
                  Contract, and have established a Loss in accordance with
                  paragraph 11(c) with respect to such Contract, you may request
                  reimbursement from us of the Loss.  After receipt from you of
                  your invoice for the amount of the Loss (showing the
                  calculations necessary to





                  arrive at the Loss) we will, in our discretion, either refund
                  to you the amount of the Loss from the Reserve Account or from
                  our other funds.

2.  All capitalized terms used in this Amendment and not defined herein shall
have the meaning given to them in the Letter Agreement.  Except where they
expressly conflict with the terms of this Amendment, all terms and provisions of
the Letter Agreement shall remain in full force and effect.

3.  Except as expressly provided for herein, this Amendment will in no way
affect the existing rights of SBCC and Stenograph nor in any way be construed as
a waiver of any such rights.

4.  This Amendment shall be binding upon and shall inure to the benefit of the
parties hereto and their respective successors and assigns.  This Amendment
shall be governed by and construed in accordance with the internal laws (as
opposed to the conflicts of law provisions) of the State of Illinois.




IN WITNESS WHEREOF, Stenograph and SBCC have executed this Amendment on the date
first set forth above and the amendments set forth herein shall be effective as
of August 31, 1994.


            STENOGRAPH CORPORATION ("STENOGRAPH")



            By:  /s/ Robert J. Panfil
                ---------------------------------
            Title:  Senior Vice President-Finance
                   ------------------------------

            SANWA BUSINESS CREDIT CORPORATION ("SBCC")


            By:  /s/ Paul Omohundra
                ---------------------------------
            Title:  Vice President
                   ------------------------------

                                      CONSENT OF GUARANTORS


    The undersigned guarantor of the obligations of Stenograph Corporation under
the above-referenced Letter Agreement hereby acknowledges and consents to the
above Fifth Amendment to Letter Agreement and agrees that its obligations under
its Guaranties dated May 11, 1981, May 31, 1982, and December 28, 1988,
respectively, remain in full force and effect.


QUIXOTE CORPORATION


By:   /s/ James H. DeVries
     -----------------------------
Title:   Executive Vice President
        --------------------------

    The undersigned guarantor of the obligations of Stenograph Corporation under
the above-referenced Letter Agreement hereby acknowledges and consents to the
above Fifth




Amendment to Letter Agreement and agrees that its obligations under its Guaranty
dated August 31, 1994 remain in full force and effect.


LEGAL TECHNOLOGIES, INC.

By:   /s/ Robert J. Panfil
     -----------------------------
Title:   Chief Financial Officer
        --------------------------