Mark-up drawings are designed to help communication. Where plant drawings traditionally concentrate on dimensional requirements and are drawn in 2D, mark-up drawings have all the clutter removed and show the component as a 3D representation, from any angle, and with any section / detail views required.

• They can be printed out and taken into the field for easy note-taking and other annotation
• This example shows a multi-page PDF with views of the HRSG from different angles

• Drawings can be 2D eDrawings (using a downloadable viewer) or Adobe Acrobat PDFs.
• Can be used to show nomenclature and locations of each component.
  

• Mark-up drawings can be major time savers. This example shows an HP steam main piping run, and each support has a note box ready to take the support readings during a hot or cold walkdown
• The drawing is to scale and in 3D, permitting rapid location of each support