RESICALC Users:

    Welcome to RESICALC usership. If you expected a simple hand-held calculator
emulation program, you are wrong. RESICALC is  much more powewrful than that.
All entries are treated as matrices and all calculations are done as matrix
operations. Of course, there is a limit. For example, it does not solve system
of linear equations or inverts a matrix.
    RESICALC is a subset of more powerful MATRIX CALCULATOR, whose capabilities
includudes linear programming calculations, solution of system of linear and
non-linear equations, numerical integration and solution of ordinary
differential equations, and 160+ page manual.
    Please contact SoftTech Inc., 14640 LaBelle, Oak Park, MI 48237
Tel 1-313-544-8544 for details.

    It may take some time to learn and appreciate the full capabilities of
RESICALC, but to do the regular non-matrix (or 1 by 1 matrix) calculations, you
can start right now. Just follow the instructions.

1. Install RESICALC. Just slip the distribution diskette in the logged drive
  and type RESICALC.

2. After a few seconds, the system prompt (such as 'A>') will return as if
   nothing happened.

3. Now go about running other programs, word processor, spreadsheet, or
   anything else. When you need RESICALC, press the Alt key and F9 keys
   simultaneously. You should see RESICALC running. If you are also using other
   RAM resident programs such as Sidekick, you can call RESICALC from it.
   However, if you invoked RESICALC from Sidekick, you will not be able to
   invoke Sidekick from RESICALC. If you invoked Sidekick from RESICALC, then
   you can not invoke RESICALC. Other than this double invokation, there is
   no known interaction with Sidekick.

4. You are now in the Main Menu of RESICALC. To do simple calculations, just
   press 'R' to enter Run mode. You can evaluate as many expressions as you
   want. If you want to reenter the Main Menu, just press Carriage Return
   (Or enter an empty expression, in RESICALC jargon).

5. In the Run mode, enter expressions as you would write on a paper, ending
   with Carriage Return. You should see the result immediately. For example,

   3.0+$4FE4*1E3/SIN(COS(X^2))

   ia a perfectly legal, executable expression, provided than a VARIABLE x
   is available.

6. To create a variable (such as X in the above expression) or to change the
   number stored in it, attach @variablename after your expression.

   2.0/3*4E-8*SINH(50)@VALUE

   will store the result of expression up tp '@' at a VARIABLE named VALUE,
   which may be new or already existing. Variables created by @ are GLOBAL
   VARIABLES, i.e., they are accessible from anywhere within RESICALC unless
   masked by identical LOCAL VARIABLE name.

7. If you need the result of previous expression, it is available as a variable
   named RESULT. For example,

   5-ACOS(RESULT^4)

   is perfectly legal. All expressions are evaluated as if they are
   concatenated by '@RESULT'.

8. You can also define a frequently used expressions as a function.
   For example, to calculate SQRT(x^+y^2) defined as a DIST,

   a. Enter F mode from Main Menu by pressing F.
   b. Enter function name 'DIST', ending with Carriage Return.
   c. Enter argument name just like entering function name, say 'X'.
      'X' is a LOCAL VARIABLE not accessible from outside of function.
   d. Enter the defining expression, such as, for the above example,

      SQRT(RSUM2(X))

      where RSUM2 is a built-in function which calculates sum of squares of
      tits argument(s).
   e. Now you are ready to use the function DIST from Run mode.

      DIST(3,4) will return the RESULT 5.

8. To leave RESICALC, press Alt and F9 keys simultaneously.

9. You may return to RESICALC and resume calculations by Alt-F10 again.
   Swithch back and forth without losing anything.

10. There are many more goodies to learn Please read the MANUAL.DOC very
    carefully.