6.3.4 Usage of commas

In SINGULAR, a comma separates list elements and the value of a comma expression is a list. Hence, commas cannot be used to combine several expressions into a single expression. For example, instead of writing

for (i=1, j=5; i<5 || j<10; i++, j++) {...} // WRONG!!!!!!

one has to write

for (i,j = 1,5; i<5 || j<10; i++, j++) {...}