A walkthrough may be quite informal, or it may follow the process detailed in IEEE 1028 and outlined in the article on software reviews.
In general, a walkthrough has one or two broad objectives: to gain feedback about the technical quality or content of the document; and/or to familiarize the audience with the content.
A walkthrough is normally organized and directed by the author of the technical document. Any combination of interested or technically qualified personnel (from within or outside the project) may be included as seems appropriate.
IEEE 1028 recommends three specialist roles in a walkthrough:3
IEEE Standard for Software Reviews and Audits. 2008-08-15. pp. 1–53. doi:10.1109/IEEESTD.2008.4601584. ISBN 978-0-7381-5768-9. 978-0-7381-5768-9 ↩
Pries, Kim H.; Quigley, Jon M. (2009). Project Management of Complex and Embedded Systems. Boca Raton, FL: CRC Press (Auerbach Publications). ISBN 978-0-429-11624-7. OCLC 297220015. 978-0-429-11624-7 ↩