|  |  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++) {...}
 | 
 
 |