Answer Posted / satish kumar.v

IF you have given this

data k;
input a1 a2 a4 a3;
datalines;
1 2 3 4
5 6 7 8
;
proc print;
var a1--a4;
run;
proc print;
var a1-a4;
run;

the order is taken as priority when ever the a4 occurs then
it will stops processing in the case of a1--a4 i.e it will
display only 3 variables (a1 a2 a4) where as in second case
a1-a4 it will display all the 4 variables with 2 records

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