printlevel

When the system variable printlevel is set to the default of 1, only the results of Darwin statements and statements nested at depth one inside for, while and if commands are displayed. If printlevel is set to value 0, only Darwin statements which were directly entered to system are displayed. Given a negative value, printlevel displays only the result of print statements. Enter the following short segment of code after setting the printlevel variable to negative one, zero and then one and observe the differences in output it generates.

> lprint('Calculating the sum from 1..5);     
> total := 0;
> for i to 5 do
>   total := total + i;
> od;

Assigning larger values to printlevel causes larger amounts of information to be displayed. If printlevel is assigned two, then all statements executed within routines, if, for, and while commands nested at a depth less than or equal to two are displayed. At value three, all routines, if, for, and while commands nested at a depth less than or equal to three are displayed and so forth.