Editing ALGOL 68S (section)

==Chief differences from ALGOL 68==
The main differences between ALGOL 68 and 68S, as summarised from Appendix 4 of the Informal Introduction,<ref name="II">{{cite book |last1=Lindsey |first1=C. H. |author-link=Charles H. Lindsey |last2=van der Meulen |first2=S. G. |date=1977 |title=Informal Introduction to Algol 68 |publisher=North-Holland}}</ref> include:
* No ''union''
* No ''flex'', but ''string''s are handled specially
* No arrays inside structures (but references to arrays were allowed) and a similar restriction on arrays of arrays (multidimensional arrays are nonetheless permitted)
* Limits on use of ''long'' and ''short'' to aid implementing on small computers
* No ''heap''
* No [[Parallel computing|parallel processing]]
* Limits on the order of declaration and other small syntactic differences to allow one-pass compiling
* No ''format''s