A Note on the Construction of a General Survey Program in Extended Mercury Autocode

The paper describes a general program for the analysis of surveys. The program was written in Extended Mercury Autocode for the Rothamsted Orion and is similar to that written earlier for the Elliott 401, but the derived variate instructions are written separately for each survey in EMA by the user. The steering section is also written in EMA, and complicated cycling can therefore be introduced without difficulty. The program provides for the use of magnetic tape for dumps and storage of tables.