Basic Facilities

This looks almost like an Algol 60 program. It has upper- and lower-case letters, typographically distinguished keywords identical to those in Algol 60, semicolons, the ‘colon equals’ assignment symbol, free format, variable declarations, long identifiers — everything one would expect from previous knowledge of Algol 60. The only slight oddity is the double bracketing in the input-output statements, but even that could be imagined in Algol 60 as a feature of some dialect. On this showing, Algol 68 looks as though it is going to be simply an extension of Algol 60.