Selecting the third option prints the matrix of procedure calls and the internal parameters
associated with each procedure
Selecting the fourth option copiles code to print values on all assignments at run-time.
This faclity is described in page L-2-0 and page L-3-0
of the official English Electric Algol Users Manual.
Ignore the section on segmented Kidsgrove ALGOL.
The last option invokes the optimiser, which was obviously not finished in the version of the compiler that we have
Simple loops are optimised correctly, but anything tricky, such as assignment to a for-loop’s control variable,
or call of a procedure within a loop is very likely to be compiled incorrectly.