TS 88-21 ISO 128-21:2000/T1 (Numara tadili, TS 88-21 EN ISO 128-21)

TS 88-21 ISO 128-21:2000/T1 (Numara tadili, TS 88-21 EN ISO 128-21): TS 88-21 EN ISO 128-21 is part of the 128 series for technical drawings, focused on preparing lines with CAD systems. This record is centered on the document’s renumbering rather than a full technical rewrite: TS 88-21 ISO 128-21 was amended by TS 88-21 ISO 128-21/T1 and re-identified as TS 88-21 EN ISO 128-21.

Technical purpose of line preparation in CAD

In general technical drafting, the line is the core visual element used to represent visible edges, hidden detail, axes, section boundaries, and dimensioning relationships. In a CAD environment, that representation depends on consistent control of line weight, continuity, type, and layer organization. A standard in this area helps maintain a common drafting language across different software tools and project teams.

What this document covers

• It belongs to the field of technical drawings and general principles of presentation.
• It concerns the preparation of lines using CAD systems.
• It is linked to the line presentation logic of the ISO 128 series.
• The record reflects amendment and renumbering information, not a separate standalone technical subject.
• The record is shown as withdrawn as of 2020.

For users, this is a relevant reference for understanding how line-based representation is organized in CAD-oriented technical documentation. The listing reflects the standard’s topic and amended identity, rather than reproducing the full set of detailed provisions from the document itself.