Characteristics and functions of the program 
DevExcel program is equipped with a customized menu bar. Every
option in DevExcel is available from this menu bar.
The working file is created separately making it possible to reduce
the data storage.
The working file can be made up various computation sheets. You
can from the same file, to insert a new computation sheet or to
duplicate the computation sheet in course for a similar study and
to make the complementary modifications thereafter.
In your table of calculation you can add lines of calculation,
withdraw elements, or insert library units anywhere, without deteriorate
the phases of calculations.
For each working sheet, the document can be:
 The "Spent estimate detail sheet", (costs of
materials, discount suppliers, unit labor, price selling, etc.)
 The "Customer quotation sheet".
 The "Monthly progress payment".
 Estimate synthesis, assessments of works, statistics.
DevExcel also ensures the automatic treatment of conversions of
the Dollars for other currency or vice versa on the working sheet.
All the functions of calculations placed in the estimate sheet
are integrated functions from Excel, none of these functions was
written in VBA avoiding of this fact all risks of losses of display
data.
Presentation of the Cost estimate detail 
Margins
The margin rates are applied to the selling prices. These margins
rates are the overheads of the company, the specific expenses relating
to the operation and the forecast benefit.
The markup, that is to say the multiplying coefficient of the
cost price to establish the selling price of each item corresponding,
are = 100 / (100  margin).
Markup of different values can be applied to certain items in
selling price, such as for example subcontracting work; the real
rate for margin will be recomputed according to the values of the
general selling price and the general cost price.
Labor
The labor cost is expressed by an average time rate according to
the principal activity of the company. This time rate integrates
the payroll charges and also takes into account the paidleaves,
the premiums and allowances day laborers of meal and transport,
unproductive times and the effect of possible overtime.
The basic cost price for labor is affected automatically with the
work concerned.
Different labor cost can be applied if necessary to certain items
(night hours for example) for inputting an index.
The labor cost in each part of work is defined according to the
average time rate and of the labor time.
Cost estimate detail sheet
The unit prices for sale can be display in round values or with
2 decimals.
Here what the computation sheet in "Spent estimate detail"
resembles:
In screen presentation
The reproduction of the sheet of work is prohibited. Copyright
(c) 2002, Jean Yves Messe
All the cells placed in color columns are parameterized. The results
are displayed instantaneously by automatic calculation.
The unit prices for sale can be displayed in round values or with
2 decimals (round values in the above example).
The cells with a function for calculation are protected, avoiding
the fact all risks to zap the formula.
The fact of using the computation sheet in mode "protect",
prevents handling such as: copying / pasting, creation of subtotals,
etc.
It is thus much more convenient to work without protection. The
fact of crushing a formula of computation by inadvertently is signaled
at any moment in red in the cell concerned (see on the above table).
The reconstitution of this formula is simply made by one copy /
paste on an unspecified cell placed on the same column.
The elements such as the time costs for labor, the margins reserved
for company (overheads, benefit, insurance's, etc), can be modified
at all times, the unit prices are recomputed instantaneously and
automatically.
At printing exit:
++
Subtotal and Summary
Creations of subtotals can take place on any line from a call
procedure placed on the menu bar.
The creation of the summary block of the subtotals can be imported
constantly on an unspecified position of the working sheet.
The reconstitution of the subtotals in the summary block is done
automatically, always from a procedure from personalized menu bar.
An additional control is carried out separately by cumulating the
whole of the elements introduced individually into the working sheet.
This makes it possible to be ensured if subtotals have well integrated
the integral incorporation of the introduced items.
Presentation of the Customer estimate 
The presentation "Customer estimate" is done automatically
from a call procedure placed on the customized menu bar.
All the confidential elements reserved for the company are dissimulated
automatically.
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