Editing Engineering drawing (section)

==Conventional parts (areas)==

===Title block===
Every engineering drawing must have a title block.<ref>
United States Bureau of Naval Personnel.
[https://books.google.com/books?id=rzw7AQAAIAAJ "Engineering Aid 1 & C."].
1969.
p. 188.
</ref><ref>
Andres M. Embuido.
[https://books.google.com/books?id=t-KtEyjmgBQC "Engineering Aid 1 & C"].
1988.
p. 7-10.
</ref><ref>
[https://books.google.com/books?id=unwwAAAAYAAJ "Farm Planners' Engineering Handbook for the Upper Mississippi Region"].
1953.
p. 2-5.
</ref>

The title block (T/B, TB) is an area of the drawing that conveys [[header (computing)|header]]-type information about the drawing, such as: 
* Drawing title (hence the name "title block")
* Drawing number
* [[Part number]](s)
* Name of the design activity (corporation, government agency, etc.)
* Identifying code of the design activity (such as a [[Commercial and Government Entity|CAGE code]])
* Address of the design activity (such as city, state/province, country)
* Measurement units of the drawing (for example, inches, millimeters)
* Default tolerances for dimension callouts where no tolerance is specified
* Boilerplate callouts of general [[specification (technical standard)|specs]]
* [[Intellectual property]] rights warning

[[ISO 7200]] specifies the data fields used in title blocks.
It standardizes eight mandatory data fields:<ref name="fg_title_block" >
Farhad Ghorani.
[http://tolerancing.net/engineering-drawing/title-block.html "Title Block"].
2015.
</ref>
* Title (hence the name "title block")
* Created by (name of drafter)
* Approved by
* Legal owner (name of company or organization)
* Document type
* Drawing number (same for every sheet of this document, unique for each technical document of the organization)
* Sheet number and number of sheets (for example, "Sheet 5/7")
* Date of issue (when the drawing was made)

Traditional locations for the title block are the bottom right (most commonly) or the top right or center.

===Revisions block===
The revisions block (rev block) is a tabulated list of the revisions (versions) of the drawing, documenting the [[revision control]].

Traditional locations for the revisions block are the top right (most commonly) or adjoining the title block in some way.

===Next assembly===
The next assembly block, often also referred to as "where used" or sometimes "effectivity block", is a list of higher assemblies where the product on the current drawing is used. This block is commonly found adjacent to the title block.

===Notes list===
The notes list provides notes to the user of the drawing, conveying any information that the callouts within the field of the drawing did not. It may include general notes, flagnotes, or a mixture of both.

Traditional locations for the notes list are anywhere along the edges of the field of the drawing.

====General notes====
General notes (G/N, GN) apply generally to the contents of the drawing, as opposed to applying only to certain part numbers or certain surfaces or features.

====Flagnotes====
Flagnotes or flag&nbsp;notes (FL, F/N) are notes that apply only where a flagged callout points, such as to particular surfaces, features, or part numbers. Typically the callout includes a flag icon. Some companies call such notes "delta notes", and the note number is enclosed inside a triangular symbol (similar to [[delta (letter)|capital letter delta]], Δ). "FL5" (flagnote 5) and "D5" (delta note 5) are typical ways to abbreviate in [[ASCII]]-only contexts.

===Field of the drawing===
The field of the drawing (F/D, FD) is the main body or main area of the drawing, excluding the title block, rev block, P/L and so on

===List of materials, bill of materials, parts list===
{{main| bill of materials }}
The list of materials (L/M, LM, LoM), bill of materials (B/M, BM, BoM), or parts list (P/L, PL) is a (usually tabular) list of the materials used to make a part, and the parts used to make an assembly. It may contain instructions for heat treatment, finishing, and other processes, for each part number. Sometimes such LoMs or PLs are separate documents from the drawing itself.

Traditional locations for the LoM/BoM are above the title block, or in a separate document.

===Parameter tabulations===
Some drawings call out dimensions with parameter names (that is, variables, such a "A", "B", "C"), then tabulate rows of parameter values for each part number.

Traditional locations for parameter tables, when such tables are used, are floating near the edges of the field of the drawing, either near the title block or elsewhere along the edges of the field.

===Views and sections===
Each view or section is a separate set of projections, occupying a contiguous portion of the field of the drawing. Usually views and sections are called out with cross-references to specific zones of the field.

===Zones===
Often a drawing is divided into zones by an [[alphanumeric grid]], with zone labels along the margins, such as A, B, C, D up the sides and 1, 2, 3, 4, 5, 6 along the top and bottom.<ref>
Paul Munford.
[https://cadsetterout.com/drawing-standards/grid-reference-frame/ "Technical drawing standards: Grid reference frame"].
</ref>
Names of zones are thus, for example, A5, D2, or B1. This feature greatly eases discussion of, and reference to, particular areas of the drawing.