This was Strachey's annotated and revised copy. This eventually became the first part of the Working Papers (MS. Eng. misc. b. 270/C.153). The manuscript amendments and annotations by Strachey were transferred to the version included in the Working Papers so that the Programming Manual would not have to be re-typed.

Inserted at the back of the Manual is a 3-page 'Supplement to the CPLElementary Programming Manual' by L.J.D. McIntyre, 9 May 1966, which describes the facilities available in the trial CPL system in use at Cambridge.

Included here is a 1-page note by M.V. Wilkes, 23 May 1966, 'Introduction of CPL for limited experimental use', notifying members of Mathematical Laboratory, Cambridge, that experimental CPL system was available.