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4.1 Graphical representation and annotation of3D data (3D modelling output)Graphical representation and annotation of 3D models shall conform to thefollowing standard.BS ISO 16792, Technical product documentation – Digital product definitiondata practicesNOTE See Section 3.4.2 Drawing sheetsCOMMENTARY ON 4.2The complete drawing sheet comprises the drawing space, title block, border and frame.4.2.1 GeneralThe drawing sheet shall conform to BS EN ISO 5457 and BS EN ISO 7200.4.2.2 SizesAs required by BS EN ISO 5457, the original drawing shall be made on the smallestsheet permitting the necessary clarity and resolution.NOTE 1 The preferred sizes of the trimmed and untrimmed sheets, as well as thedrawing space, are given in Table 3.NOTE 2 The range of sheet sizes chosen could be rationalized through the use ofscales. See 4.4

4.5 Lines4.5.1 Lines and terminatorsLines shall conform to the following standards, as appropriate.BS EN ISO 128-20 Technical drawings – General principles of presentation –Part 20: Basic conventions for linesBS EN ISO 128-21 Technical drawings – General principles of presentation –Part 21: Preparation of lines by CAD systems