Initially, a new engineering item will not get a revision code if you select the New engineering item has no revision code check box. You can choose between only entering the start value, or always manually filling in a revision code. Your choice determines the value you select in the Incrementation method for engineering item revision field. For the start value, indicate how the revision code is to be incremented from now on. Select 'No method' if you always want to enter the revision code yourself.

By default, a new engineering item will be assigned the engineering group you enter in the Default value for engineering group field.

Every engineering item revision is assigned a revision code. In the Incrementation method for engineering item revision field, choose how new revision codes are to be determined:

Method	Assigned revision codes
No method	No revision code will be suggested for a new engineering item revision. You will manually fill in the revision codes.
Numeric (starting at 0)	0, 1, 2, etcetera
Numeric (starting at 1)	1, 2, 3, etcetera
Two-digit number code (starting at 00)	00, 01, 02, etcetera
Two-digit number code (starting at 01)	01, 02, 03, etcetera
Three-digit number code (starting at 000)	000, 001, 002, etcetera
Three-digit number code (starting at 001)	001, 002, 003, etcetera
Alphanumeric lowercase	a, b, c, etcetera
Alphanumeric uppercase	A, B, C, etcetera

If you select the New engineering item revision is editable check box, the revision code assigned can be changed. If you chose 'No method' in the Incrementation method for engineering item revision field, the check box is selected automatically. In that case, it must be possible to change the revision, as no revision code is assigned by default.

If you select the Use net sizes check box, the quantity, length, width, and height values are copied from the engineering BOM (Bill of Material) during the synchronization of engineering items with the production file, and used as the net sizes of the production calculation.

If the dimensions on a BOM line of a part or production file are the same as the net sizes, the dimensions will automatically change when the net sizes in the engineering BOM are changed. This is not the case when the dimensions are different from the net sizes.

The setting also affects the comparison between the engineering structure and the production structure on the Engineering structure and Production structure forms. If you select the Use net sizes check box, the sizes of the engineering item (which are always net sizes) will be compared with the net sizes of the production structure. If you leave this check box empty, the dimensions of the engineering item will be compared with the dimensions of the production structure.

The Use position number setting applies to the synchronization of engineering items with the production file. The setting has the following impact during synchronization:

• If you select the Use position number check box, the line numbers from the engineering BOM will be copied to the positions of the production calculation.
• If you do not select the Use position number check box, the line numbers from the engineering BOM will be copied to the line numbers of the production calculation.

The setting also affects the comparison between the engineering structure and the production structure on the Engineering structure and Production structure forms. If you select the Use position number check box, the engineering item line is compared with the corresponding position number in the production structure. If you leave this field empty, the engineering item line is compared with the corresponding line in the production structure.