The calculation lines are numbered automatically. If Isah is linked to engineering software, the position number is used to indicate the position (balloon) on the drawing.

The part type indicates the type of part:

• Purchase part
• Production part
• Costs
• Service
• Functional BOM

You can use this field to enter additional information about the part. The contents of this informational field are displayed on various Isah forms, including offers and orders.

The Revision field shows the revision of the part specified on the selected line. If revisions are not used in your company, the value of this field is always '000'. If you are using part revisions, the current revision is displayed and the date is initially equal to the start date of the revision in the production file. The setting of the Part revision management check box affects the contents of the Revision and Date fields:

• The Part revision management check box is empty: If you change the date, Isah will check which part revision is valid on that date. This revision will then be filled in automatically in the Revision field.
• The Part revision management check box is selected: If you change the revision, the start date of that revision will be filled in automatically in the Date field.

Use this field to specify how the part is to be obtained, or in other words, the origin of the part. Initially, the order code of the part determines the origin type. For example, the order code 'Purchase to order' is translated into the origin type 'Distributed origins', and the quantity is then entered in the Purchase field.

You can modify the origin type:

Copy calculation (phantom):	Use the order code 'Copy calculation (phantom)' to merge any underlying calculations into one calculation. The calculation will then include a phantom line that shows the semi-finished product for which the underlying calculation components are intended. All part lines, operation lines, equipment lines, and external operation lines referring to the semi-finished product will contain a reference to the phantom line. Use the Show phantom option to specify whether the phantom line should be displayed on the form.
From customer:	Use this setting to indicate that the part is supplied by the customer (who has ordered the finished product in which it will be included).
Distributed origins:	If you choose this option, use the Stock, Purchase, and Production fields in the Distributed origins section to specify the origins of the part and the quantities obtained from those origins.

Example

If the finished product of the production file is a cabinet, the cabinet shelves may be a component of the calculation. The origin type will then indicate the origin of these shelves:

• They may be produced by you as part of the current production file (they are sawn to size).
• They may be supplied by the customer.
• In case of distributed origins, the shelves may be taken from stock, originate from production in another production file, or purchased from another party. Also a combination of these options is possible.

If the part line contains a semi-finished product, you can copy the calculation of that semi-finished product if it has the order code 'Copy calculation (phantom)'. Once this calculation has been copied, the Copied check box of the semi-finished product will be selected. You can manually change the value of the field.

If a calculation was copied (in case of a part with order code 'Copy calculation (phantom)'), you can choose to display both the semi-finished product and the components of the semi-finished product in the calculation. You can also choose to show only the components of the semi-finished product, and therefore only the calculation lines. If you select the Show phantom check box, the calculation will show the semi-finished product, the phantom, and the underlying calculation lines. If you leave this check box empty, you will see the calculation lines, but not the parent semi-finished product (the phantom).

If the External check box is selected, the production calculation line was created by an external application, such as a CAD or PDM integration application. The line is managed mainly in the external application. You can change the line in Isah, but it is possible that during synchronization, it will be overwritten by data from the external application.

If the production calculation line was created in Isah, the check box is empty and the part is managed only in Isah. This is an informational field and cannot be changed.

This is the number of pieces of the part you need in order to make the finished product.

Note: When building the calculation, you should take into account the quantity that needs to be created for the production file (see the Quantity field on the General tab of the production file). For example, if the quantity ordered is '10 pieces', fill in the quantity required to produce ten parts.

Specify the length, width, and/or height per piece. Whether or not you can fill in one or more of these fields depends on the setting of the Unit code field on the General tab of the Parts form:

Unit code	Can a length be filled in?	Can a width be filled in?	Can a height be filled in?
Quantity	No	No	No
Quantity * Length	Yes	No	No
Quantity * Length * Width	Yes	Yes	No
Quantity * Length * Width * Height	Yes	Yes	Yes

The number in this field is calculated automatically by multiplying the quantity, the length, the width, and the height. The value of this informational field cannot be modified directly.

Note: If the Show costs including waste check box was selected from the Settings menu, the value in this field is including any waste. If the check box is not selected, the waste will not be taken into account.

The weight and surface area of the parts can be displayed only if the weight or surface area has been specified for the part on the General tab in the Parts module.

Note: If the Show costs including waste check box was selected from the Settings menu, the values in these fields are including any waste. If the check box is not selected, the waste will not be taken into account.

These fields are informational fields that could be used, for example, by the planner. The planner could use them to register the exact quantities and sizes as specified on the drawing.

This is the waste percentage taken into consideration in the calculation. The waste percentage is taken into account in the calculation of the quantity, the weight, and the surface area (General tab), and in the variable costs.

These informational fields can be used when linking Isah with CAD/PDM software.

This check box is used for the AutoCAD integration. If selected, any text on the memo page of the calculation line is printed on the drawing.