comma - (,) column, instruction, argument separator
Commas are used to separate parameters in functions or to separate entries of row vectors.
Blanks can also be used to separate entries in a row vector but use preferably commas.
Also used to separate Scilab instructions. (Use ; to have the result not displayed on the screen).
a=[1,2,3;4,5,6]; a=1,b=1;c=2